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A071751
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Expansion of (1+x^4*C^3)*C^2, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.
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1, 2, 5, 14, 43, 137, 449, 1505, 5137, 17797, 62426, 221272, 791350, 2852090, 10348597, 37772095, 138592365, 510905325, 1891325190, 7028112300, 26206236570, 98023732590, 367707496650, 1382982337074, 5214154271466
(list; graph; refs; listen; history; internal format)
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