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Search: id:A144560
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A144560 10 times hexagonal numbers: 10n(2n-1). +0
1
0, 10, 60, 150, 280, 450, 660, 910, 1200, 1530, 1900, 2310, 2760, 3250, 3780, 4350, 4960, 5610, 6300, 7030, 7800, 8610, 9460, 10350, 11280, 12250, 13260, 14310, 15400, 16530, 17700, 18910, 20160, 21450, 22780, 24150, 25560, 27010 (list; graph; listen)
OFFSET

0,2

FORMULA

a(n) = 20n^2 - 10n = A000384(n)*10 = A002939(n)*5 = A152745(n)*2.

CROSSREFS

Cf. A000384, A002939, A152745, A152994.

Sequence in context: A066290 A065641 A121874 this_sequence A076160 A004406 A003472

Adjacent sequences: A144557 A144558 A144559 this_sequence A144561 A144562 A144563

KEYWORD

easy,nonn

AUTHOR

Omar E. Pol (info(AT)polprimos.com), Jan 01 2009

page 1

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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