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Search: id:A055013
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| A055013 |
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Sum of 4th powers of digits of n. |
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+0
7
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| 0, 1, 16, 81, 256, 625, 1296, 2401, 4096, 6561, 1, 2, 17, 82, 257, 626, 1297, 2402, 4097, 6562, 16, 17, 32, 97, 272, 641, 1312, 2417, 4112, 6577, 81, 82, 97, 162, 337, 706, 1377, 2482, 4177, 6642, 256, 257, 272, 337, 512, 881, 1552, 2657, 4352, 6817
(list; graph; listen)
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OFFSET
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0,3
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FORMULA
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a(n)=sum{k>0, (floor(n/10^k)-10*floor(n/10^(k+1)))^4}. - Hieronymus Fischer (Hieronymus.Fischer(AT)gmx.de), Jun 25 2007
a(10n+k)=a(n)+k^4, 0<=k<10. - Hieronymus Fischer (Hieronymus.Fischer(AT)gmx.de), Jun 25 2007
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MAPLE
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for n from 0 to 4 do seq(n^4+j^4, j=0..9 ); od; - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Nov 06 2006
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CROSSREFS
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Cf. A003132.
Cf. A003132, A055012.
Cf. A007953, A055017, A076313, A076314.
Sequence in context: A096020 A016898 A017672 this_sequence A080150 A000583 A050751
Adjacent sequences: A055010 A055011 A055012 this_sequence A055014 A055015 A055016
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KEYWORD
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base,nonn
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AUTHOR
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Henry Bottomley (se16(AT)btinternet.com), May 31 2000
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