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A087152 Expansion of (1-sqrt(1-4*ln(1+x)))/ln(1+x)/2. 0
1, 3, 20, 194, 2554, 42226, 843744, 19769256, 531768120, 16152296424, 546895099200, 20425461026736, 834215500905552, 36988602430554576, 1769524998544143360, 90851799797294235264, 4982968503277896871296 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

FORMULA

a(n) = Sum_{k=0..n} Stirling1(n, k)*k!*Catalan(k).

CROSSREFS

Cf. A000108, A052851, A052803, A052886, A052895, A006531, A048287.

Sequence in context: A176043 A108206 A120485 * A158833 A054361 A052595

Adjacent sequences:  A087149 A087150 A087151 * A087153 A087154 A087155

KEYWORD

nonn

AUTHOR

Vladeta Jovovic (vladeta(AT)eunet.rs), Oct 18 2003

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Last modified February 17 04:26 EST 2012. Contains 205978 sequences.