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Search: id:A081456
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A081456 Product of entries in n-th row of triangle in A081454. +0
5
1, 4, 16, 36, 144, 1296, 14400, 57600, 518400, 6350400, 101606400, 914457600, 14631321600, 526727577600, 3292047360000, 52672757760000, 708155965440000, 25493614755840000, 917770131210240000, 22944253280256000000 (list; graph; listen)
OFFSET

1,2

FORMULA

a(n) equals smallest integer square m^2 such that A086435(m^2)=n-1. [From Max Alekseyev (maxale(AT)gmail.com), Jul 16 2009] - Extended by Max Alekseyev (maxale(AT)gmail.com), Jul 16 2009

CROSSREFS

Cf. A081454, A081455, A081457.

Sequence in context: A114268 A136404 A046952 this_sequence A130279 A030158 A054246

Adjacent sequences: A081453 A081454 A081455 this_sequence A081457 A081458 A081459

KEYWORD

nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 21 2003

EXTENSIONS

More terms from David Garber (garber(AT)math.huji.ac.il), Jun 17 2003

More terms from Ray G. Opao (1260(AT)email.com), Aug 01 2005

Corrected and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 12 2006

More terms from Max Alekseyev (maxale(AT)gmail.com), Jun 05 2009

Extended by Max Alekseyev (maxale(AT)gmail.com), Jul 16 2009

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Last modified December 7 23:50 EST 2009. Contains 170430 sequences.


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