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A060934
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Second column of Lucas bisection triangle (even part).
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3
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1, 17, 80, 303, 1039, 3364, 10493, 31885, 95032, 279051, 809771, 2327372, 6636025, 18794633, 52925984, 148303719, 413768263, 1150029940, 3185625077, 8797726981, 24230897416, 66574108227
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OFFSET
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0,2
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COMMENTS
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Numerator of g.f. is row polynomial sum(A061186(2,m)*x^m,m=0..3).
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LINKS
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Table of n, a(n) for n=0..21.
É. Czabarka, R. Flórez, L. Junes, A Discrete Convolution on the Generalized Hosoya Triangle, Journal of Integer Sequences, 18 (2015), #15.1.6.
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FORMULA
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a(n) = A060923(n+1, 1).
G.f.: (1+11*x-11*x^2+4*x^3)/(1-3*x+x^2)^2.
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CROSSREFS
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A002878(n)=A060923(n, 0).
Sequence in context: A142021 A172045 A338549 * A228602 A100688 A044204
Adjacent sequences: A060931 A060932 A060933 * A060935 A060936 A060937
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KEYWORD
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nonn,easy
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AUTHOR
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Wolfdieter Lang, Apr 20 2001
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STATUS
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approved
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