OFFSET
0,3
FORMULA
E.g.f.: 1/(1-A(x)) where A(x) is the e.g.f. for A036774.
a(n) ~ n! * (5/2)^n/5. - Vaclav Kotesovec, Sep 24 2013
MATHEMATICA
a = (1 - x - (1 - 2 x - x^2)^(1/2))/x; Range[0, 20]! CoefficientList[Series[1/(1 - a), {x, 0, 20}], x]
CROSSREFS
KEYWORD
nonn
AUTHOR
Geoffrey Critzer, Dec 07 2011
STATUS
approved