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A212341
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Sequence of coefficients of x in marked mesh pattern generating function Q_{n,132}^(0,0,4,0)(x).
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0
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14, 56, 188, 603, 1907, 5615, 15968, 44464, 121693, 326937, 866104, 2268739, 5884632, 15127516, 38589364, 97776517, 246248849, 616795067, 1537351460, 3814809145, 9427784176, 23213028624, 56960216422, 139330244662, 339825250768, 826596931346
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OFFSET
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5,1
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LINKS
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FORMULA
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Empirical g.f.: -x^5*(25*x^3+20*x^2+14*x+14) / (5*x^4+2*x^3+x^2+x-1)^3. - Colin Barker, Jul 22 2013
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MATHEMATICA
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QQQ4[t, x] = 2/(1+(t*x-t)*(1+t+2*t^2+5*t^3)+((1+(t*x-t)*(1+t+2*t^2+5*t^3))^2-4*t*x)^(1/2)); CoefficientList[Coefficient[Series[QQQ4[t, x], {t, 0, 22}], x], t] (* Robert Price, Jun 05 2012 *)
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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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