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A085022 Integer floor of coefficients of exp(x*A(x)). 2
1, 1, 1, 2, 4, 8, 17, 37, 82, 185, 424, 983, 2301, 5431, 12913, 30900, 74361, 179855, 436974, 1065985, 2609993, 6411730, 15799090, 39039031, 96711591, 240150955, 597640140, 1490309462, 3723343793, 9318686066, 23360994967, 58654055246 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..31.

FORMULA

a(n) = floor(A085023(n)/n!) where exp(x*A(x)) = sum(n>=0, A085023(n)*x^n/n!).

PROG

(PARI) {a(n)=local(A); if(n<0, 0, A=1+O(x); for(m=1, n, A=Pol(A)+x^m*(floor(polcoeff(exp(x*A), m))+O(x)); ); polcoeff(A, n))}

CROSSREFS

Cf. A085023, A085294.

Sequence in context: A025241 A004148 A203019 * A003426 A179476 A087803

Adjacent sequences:  A085019 A085020 A085021 * A085023 A085024 A085025

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Jun 18 2003

STATUS

approved

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Last modified May 18 12:20 EDT 2013. Contains 225419 sequences.