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A127228 a(n)= numerator of ((n + 4)! - (n - 4)!)/(n!). 4
40319, 362879, 1814399, 6652799, 19958399, 51891839, 121080959, 259459199, 518918399, 980179199, 1764322559, 3047466239, 5079110399, 8204716799, 12893126399, 19769460479, 29654190719, 43609103999, 62990927999 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,1

LINKS

Table of n, a(n) for n=4..22.

MATHEMATICA

Table[Numerator[((n + 4)! - (n - 4)!)/(n!)], {n, 4, 30}]

CROSSREFS

Cf. A028387, A062938, A127227, A127229, A127230.

Sequence in context: A076778 A172863 A159720 * A269126 A168359 A090394

Adjacent sequences:  A127225 A127226 A127227 * A127229 A127230 A127231

KEYWORD

nonn,frac

AUTHOR

Artur Jasinski, Jan 09 2007

STATUS

approved

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Last modified December 1 20:47 EST 2021. Contains 349435 sequences. (Running on oeis4.)