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A090454
Fourth column (m=5) of array A090452.
2
15, 105, 396, 1110, 2600, 5390, 10220, 18096, 30345, 48675, 75240, 112710, 164346, 234080, 326600, 447440, 603075, 801021, 1049940, 1359750, 1741740, 2208690, 2774996, 3456800, 4272125, 5241015, 6385680, 7730646, 9302910, 11132100
OFFSET
0,1
FORMULA
a(n)= (n+9)*(n+6)*(n+2)*(n+1)*(n^2+15*n+20)/144,
G.f.: (15-24*x^2+18*x^3-4*x^4)/(1-x)^7.
CROSSREFS
Sequence in context: A061550 A174385 A185129 * A240440 A256287 A047640
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Dec 23 2003
STATUS
approved