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Search: id:A027482
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| 7, 39, 126, 310, 645, 1197, 2044, 3276, 4995, 7315, 10362, 14274, 19201, 25305
(list; graph; listen)
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OFFSET
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2,1
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COMMENT
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Row sums in an n X n X n pandiagonal magic cube with entries (0..n^3-1).
Equals A058895/2. - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 28 2008
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LINKS
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S. Gartenhaus, Odd order pandiagonal latin and magic cubes....
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FORMULA
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Numerators of sequence a[ n, n-1 ] in (a[ i, j ])^3 where a[ i, j ] = s(i, j)/i! if j<=i, 0 if j>i
a(n)=A000217(n^2)-A000217(n) - Jon Perry (perry(AT)globalnet.co.uk), Jul 21 2003
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MAPLE
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seq(sum(n^3-1, k=1..n)/2, n=2..33); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jan 28 2008
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MATHEMATICA
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Table[(m^4 - m)/2, {m, 44}] - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Mar 21 2007
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PROGRAM
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(PARI) t(n)=n*(n+1)/2; for(n=0, 50, print1(t(n^2)-t(n)", "))
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CROSSREFS
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Second diagonal of A027478.
Sequence in context: A027241 A056197 A158576 this_sequence A128554 A032207 A004057
Adjacent sequences: A027479 A027480 A027481 this_sequence A027483 A027484 A027485
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KEYWORD
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nonn
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AUTHOR
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Olivier Gerard (olivier.gerard(AT)gmail.com)
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