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A006502
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Related to Fibonacci numbers.
(Formerly M2970)
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4
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1, 3, 14, 60, 279, 1251, 5329, 21532, 83225, 310464, 1126502, 4000602, 13973725, 48187521, 164535708, 557528652, 1878067349, 6297614277, 21043287325, 70125062642, 233198372319, 774246922848, 2567419361916, 8505547438596, 28157369861593, 93162331494255, 308108749498202
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OFFSET
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0,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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FORMULA
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Conjecture: g.f. ( 1-7*x+18*x^2-10*x^3+5*x^4-15*x^5-39*x^6-20*x^7-3*x^8 ) / ( (x^2+3*x-1) *(x^2+2*x-1)^2 *(x^2+x-1)^3 ). - R. J. Mathar, Jun 18 2019
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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