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A162479
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Expansion of 1/((1-x)*sqrt(1-4x/(1-x)^4)).
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2
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1, 3, 17, 105, 671, 4393, 29249, 197117, 1340579, 9182013, 63247587, 437684991, 3040564703, 21191554941, 148109893057, 1037660903785, 7285259590495, 51244141331581, 361046057274899, 2547558161041995, 17999651555835001
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OFFSET
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0,2
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COMMENTS
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LINKS
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FORMULA
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G.f.: 1/(1-x-2x/((1-x)^3-x/(1-x-x/((1-x)^3-x/(1-x-x/((1-x)^3-x/(1-... (continued fraction);
a(n)=sum{k=0..n, C(n+3k,n-k)*A000984(k)}.
Conjecture D-finite with recurrence: n*a(n) +3*(2-3n)*a(n-1) +2*(7n-13)*a(n-2)+2*(12-5n)*a(n-3) +(5n-16)*a(n-4) +(4-n)*a(n-5)=0. - R. J. Mathar, Nov 17 2011
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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