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A038679 Convolution of A007054 (Super ballot numbers) with A000302 (powers of 4). 2
3, 14, 59, 242, 982, 3964, 15955, 64106, 257282, 1031780, 4135518, 16569204, 66365964, 265761016, 1064046979, 4259609626, 17050224394, 68241838036, 273110643754, 1092947507356, 4373580244084, 17500703480776 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

COMMENTS

Also: convolution of A038665 with A000984 (central binomial coefficients )

FORMULA

a(n) = 4^(n+1) - C(n+1), C(n): Catalan numbers A000108; G.f. c(x)*(4-c(x))/(1-4*x), where c(x) = g.f. for Catalan numbers.

CROSSREFS

A007054, A000302, A000108, A038665, A000984.

Sequence in context: A133444 A126875 A110526 * A151235 A151236 A006224

Adjacent sequences:  A038676 A038677 A038678 * A038680 A038681 A038682

KEYWORD

easy,nonn

AUTHOR

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)

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Last modified February 17 15:44 EST 2012. Contains 206050 sequences.