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Search: id:A022253
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| A022253 |
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Gaussian binomial coefficients [ n,2 ] for q = 9. |
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+0
1
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| 1, 91, 7462, 605242, 49031983, 3971657053, 321704819164, 26058095733124, 2110705802810605, 170967170463507055, 13848340811466703906, 1121715605764106708446, 90858964067210376612667, 7359576089446900104682897
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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G.f.: 1/[(1-x)(1-9x)(1-81x)].
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PROGRAM
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(Other) sage: [gaussian_binomial(n, 2, 9) for n in xrange(2, 16)] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 28 2009]
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CROSSREFS
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Sequence in context: A017754 A004380 A103855 this_sequence A060078 A006244 A054216
Adjacent sequences: A022250 A022251 A022252 this_sequence A022254 A022255 A022256
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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