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A082035 a(n) = (4n^2+2n+1) * n!. 2
1, 7, 42, 258, 1752, 13320, 113040, 1063440, 11007360, 124467840, 1527724800, 20237817600, 287879961600, 4377595622400, 70875950745600, 1217444836608000, 22115388911616000, 423623726862336000, 8534364149735424000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

A row of the number array A082038.

LINKS

Table of n, a(n) for n=0..18.

FORMULA

a(n) = 4*A002775(n) + A007680(n).

MATHEMATICA

Table[(4n^2+2n+1)n!, {n, 0, 20}] (* Harvey P. Dale, Jul 15 2011 *)

CROSSREFS

Cf. A001564, A082036.

Sequence in context: A003949 A252700 A033133 * A127016 A152239 A152240

Adjacent sequences:  A082032 A082033 A082034 * A082036 A082037 A082038

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Apr 02 2003

STATUS

approved

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Last modified August 8 05:50 EDT 2020. Contains 336290 sequences. (Running on oeis4.)