

A077853


Expansion of (1x)^(1)/(12*x+2*x^3).


0



1, 3, 7, 13, 21, 29, 33, 25, 7, 79, 207, 399, 639, 863, 927, 575, 577, 3009, 7169, 13185, 20353, 26369, 26369, 12033, 28671, 110079, 244223, 431103, 642047, 795647, 729087, 174079, 1243137, 3944449, 8237057, 13987841, 20086785, 23699457, 19423233, 1327103
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OFFSET

0,2


LINKS



FORMULA

a(0)=1, a(1)=3, a(2)=7, a(3)=13, a(n)=3*a(n1)2*a(n2) 2*a(n3)+ 2*a(n4) From Harvey P. Dale, May 27 2012


MATHEMATICA

CoefficientList[Series[(1x)^(1)/(12 x+2 x^3), {x, 0, 40}], x] (* or *) LinearRecurrence[{3, 2, 2, 2}, {1, 3, 7, 13}, 40] (* Harvey P. Dale, May 27 2012 *)


CROSSREFS



KEYWORD

sign


AUTHOR



STATUS

approved



