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Search: id:A107253
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A107253 a(n) = n^4 - 15*n + 15, with n*a(n) + n*( n - 1 )*15 = n^5. +0
1
1, 1, 51, 211, 565, 1221, 2311, 3991, 6441, 9865, 14491, 20571, 28381, 38221, 50415, 65311, 83281, 104721, 130051, 159715, 194181, 233941, 279511, 331431, 390265, 456601, 531051, 614251, 706861, 809565, 923071, 1048111, 1185441, 1335841 (list; graph; listen)
OFFSET

1,3

EXAMPLE

a(2) = 1, 1 + 31 = 2^5; a(3) = 51, 51 + 81 + 111 = 3^5; a(4) = 211, 211 + 241 + 271 + 301 = 4^5

CROSSREFS

Sequence in context: A157916 A007264 A158640 this_sequence A030535 A155464 A165087

Adjacent sequences: A107250 A107251 A107252 this_sequence A107254 A107255 A107256

KEYWORD

nonn

AUTHOR

Andras Erszegi (erszegi.andras(AT)chello.hu), May 14 2005

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.


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