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A127456
Special values of hypergeometric function of type 3F3: a(n)=3^n*(n!)^3* 3F3(n+1, n+1, n+1; 1, 1, 1; 3)*exp(-3), n=0,1...
0
1, 309, 394569, 1152570141, 6146536982625, 52816853458623141, 674834132958408150489, 12117734852792708882420829, 293263049341469022013133757441
OFFSET
0,2
COMMENTS
Arises in the boson normal ordering problem.
MATHEMATICA
Table[3^n*(n!)^3*HypergeometricPFQ[{n+1, n+1, n+1}, {1, 1, 1}, 3]*E^(-3), {n, 0, 15}] (* Vaclav Kotesovec, Jul 05 2018 *)
CROSSREFS
Sequence in context: A184544 A251345 A105841 * A114484 A014369 A273593
KEYWORD
nonn
AUTHOR
Karol A. Penson, Jan 15 2007
STATUS
approved