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A188718
a(n) = 4^n*R_n where R_n are the coefficients discussed in A188984.
1
1, 6, 130, 3772, 125378, 4512788, 171163380, 6737259192, 272624233922, 11270562833828, 473960605546620, 20211120713747144, 871908517791261620, 37984137010354633288, 1668675534695695271592, 73839856328273510564464, 3288232505457053332149954, 147251876924939254405677892, 6626961347483273293096934060
OFFSET
0,2
CROSSREFS
Sequence in context: A095695 A156475 A000907 * A077031 A302770 A337971
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Apr 14 2011
STATUS
approved