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Search: id:A059597
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| 1, 9, 54, 246, 945, 3177, 9648, 26928, 70092, 171820, 399960, 889560, 1900380, 3915900, 7811280, 15129168, 28526562, 52480242, 94386908, 166242780, 287179794, 487227906, 812840976, 1334891664, 2160134700
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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^2)*(1-x))^9.
a(2*k)= binomial(k+13, 13)*(8*k^4+190*k^3+1414*k^2+3488*k+1785)/(17*15*7);
a(2*k+1)= binomial(k+13, 13)*(8*k^4+258*k^3+2842*k^2+12192*k+16065)/(17*15*7), k >= 0.
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CROSSREFS
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Sequence in context: A013567 A073974 A035927 this_sequence A023008 A079817 A027472
Adjacent sequences: A059594 A059595 A059596 this_sequence A059598 A059599 A059600
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KEYWORD
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nonn
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AUTHOR
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Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Feb 02 2001
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