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Search: id:A077164
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| A077164 |
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Triangle in which n-th row gives n numbers relatively prime to n and greater than all earlier terms in the triangle. |
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+0
4
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| 2, 3, 5, 7, 8, 10, 11, 13, 15, 17, 18, 19, 21, 22, 23, 25, 29, 31, 35, 37, 41, 43, 44, 45, 46, 47, 48, 50, 51, 53, 55, 57, 59, 61, 63, 65, 67, 68, 70, 71, 73, 74, 76, 77, 79, 81, 83, 87, 89, 91, 93, 97, 99, 101, 103, 104, 105, 106, 107, 108, 109, 111, 112, 113, 114, 115, 119
(list; table; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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Triangle begins
2
3 5
7 8 10
11 13 15 17
18 19 21 22 23
...
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MAPLE
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b[1, 1]:=2:r:=3:for n from 2 to 15 do for i from 1 to n do while(gcd(r, n)>1) do r:=r+1:od:b[i, n]:=r:r:=r+1:od:od:seq( seq(b[k, j], k=1..j), j=1..15); (Sascha Kurz)
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CROSSREFS
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Cf. A077165, A077166, A077167.
Sequence in context: A047488 A066093 A022342 this_sequence A062132 A003258 A028738
Adjacent sequences: A077161 A077162 A077163 this_sequence A077165 A077166 A077167
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KEYWORD
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nonn,tabl
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Oct 31 2002
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EXTENSIONS
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Corrected and extended by Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), May 09 2004
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