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A218182
Number of truth tables of bracketed formulas (case 1).
1
0, 0, 1, 6, 33, 194, 1198, 7676, 50581, 340682, 2335186, 16237284, 114255994, 812107412, 5822171548, 42052209400, 305714145869, 2235262899418, 16426616425002, 121265916776148, 898878250833358, 6687497426512700, 49920590244564484
OFFSET
0,4
FORMULA
Yildiz gives a g.f.
G.f.: ((1-8*x)^(1/2)-3)*((2+2*(1-8*x)^(1/2)+8*x)^(1/2)-2)/8. - Mark van Hoeij, May 16 2013
PROG
(PARI) my(x='x+O('x^30)); concat([0, 0], Vec(((1-8*x)^(1/2)-3)*((2+2*(1-8*x)^(1/2)+8*x)^(1/2)-2)/8)) \\ Michel Marcus, Oct 21 2020
CROSSREFS
Sequence in context: A360717 A286187 A260774 * A093964 A361776 A193665
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Oct 23 2012
STATUS
approved