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A111401
f(f(n+1))-f(f(n)), where f() = Catalan() = A000108.
0
0, 1, 40, 2674398, 39044429911904441284800, 10934377152170553993439479038404269881062854488806451946716107868799042109068
OFFSET
0,3
CROSSREFS
Sequence in context: A300842 A159428 A115482 * A116101 A167265 A214337
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 12 2005
STATUS
approved