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A107253 n^4 - 15*n + 15. 0
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; refs; listen; history; internal format)
OFFSET

1,3

EXAMPLE

a(2) = 2^4-15*2+15 = 1; a(4) = 4^4-15*4+15 = 211.

CROSSREFS

Sequence in context: A157916 A007264 A158640 * A030535 A201813 A193250

Adjacent sequences:  A107250 A107251 A107252 * A107254 A107255 A107256

KEYWORD

nonn

AUTHOR

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

EXTENSIONS

Definition clarified by Ralf Stephan, Nov 18 2010.

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Last modified February 17 00:09 EST 2012. Contains 205978 sequences.