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A088354
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G.f. = continued fraction: A(x)=1/(1-x-x/(1-x^2-x^2/(1-x^3-x^3/(1-x^4-x^4/(...))))).
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0
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1, 2, 4, 10, 24, 60, 150, 376, 944, 2372, 5962, 14988, 37684, 94752, 238252, 599090, 1506440, 3788036, 9525280, 23952020, 60229184, 151450970, 380835368, 957640640, 2408063340, 6055266600, 15226449480, 38288118984, 96278523274, 242100012876, 608779761460, 1530825191912
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OFFSET
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0,2
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LINKS
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Table of n, a(n) for n=0..31.
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FORMULA
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G.f.: 1/Q(0), where Q(k)= 1 - x^(k+1) - x^(k+1)/Q(k+1); (continued fraction). - Sergei N. Gladkovskii, Apr 30 2013
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PROG
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(PARI)
N = 66; x = 'x + O('x^N);
Q(k) = if(k>N, 1, 1 - x^(k+1)*( 1 + 1/Q(k+1) ) );
gf = 1/Q(0);
Vec(gf)
/* Joerg Arndt, May 01 2013 */
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CROSSREFS
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Sequence in context: A038373 A052987 A100087 * A055919 A006575 A138175
Adjacent sequences: A088351 A088352 A088353 * A088355 A088356 A088357
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KEYWORD
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nonn
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AUTHOR
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Paul D. Hanna, Sep 26 2003
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EXTENSIONS
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Added more terms, Joerg Arndt, May 01 2013
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STATUS
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approved
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