A160606 Denominator of Laguerre(n, -7).

1, 1, 2, 3, 24, 15, 720, 180, 5760, 6480, 518400, 1425600, 68428800, 27799200, 1779148800, 6671808000, 426995712000, 907365888000, 130660687872000, 620638267392000, 49651061391360000, 9309574010880000, 3276970051829760000

Offset

0,3

Links

G. C. Greubel, Table of n, a(n) for n = 0..474

Mathematica

Denominator[LaguerreL[Range[0, 30], -7]] (* Harvey P. Dale, Oct 25 2011 *)

Prog

(PARI) for(n=0, 30, print1(denominator(sum(k=0, n, binomial(n, k)*(7^k/k!))), ", ")) \\ G. C. Greubel, May 14 2018
(Magma) [Denominator((&+[Binomial(n, k)*(7^k/Factorial(k)): k in [0..n]])): n in [0..30]]; // G. C. Greubel, May 14 2018

Crossrefs

For numerators see A160605.

Sequence in context: A160630 A119619 A170909 * A099617 A092043 A343206

Adjacent sequences: A160603 A160604 A160605 * A160607 A160608 A160609

Keyword

nonn,frac

Author

N. J. A. Sloane, Nov 14 2009

Status

approved