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A022253 Gaussian binomial coefficients [ n,2 ] for q = 9. 0
1, 91, 7462, 605242, 49031983, 3971657053, 321704819164, 26058095733124, 2110705802810605, 170967170463507055, 13848340811466703906, 1121715605764106708446, 90858964067210376612667, 7359576089446900104682897 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

G.f.: 1/[(1-x)(1-9x)(1-81x)].

PROG

(Other) sage: [gaussian_binomial(n, 2, 9) for n in xrange(2, 16)] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 28 2009]

CROSSREFS

Sequence in context: A017754 A004380 A103855 * A172174 A060078 A202564

Adjacent sequences:  A022250 A022251 A022252 * A022254 A022255 A022256

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 15 16:49 EST 2012. Contains 205824 sequences.