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A073480
Triangle T(n,k) read by rows, where e.g.f. for T(n,k) is exp(x*y)*log(1+x)/(1-x).
1
1, 1, 2, 5, 3, 3, 14, 20, 6, 4, 94, 70, 50, 10, 5, 444, 564, 210, 100, 15, 6, 3828, 3108, 1974, 490, 175, 21, 7, 25584, 30624, 12432, 5264, 980, 280, 28, 8, 270576, 230256, 137808, 37296, 11844, 1764, 420, 36, 9, 2342880, 2705760, 1151280, 459360, 93240
OFFSET
1,3
FORMULA
E.g.f. for k-th column is x^k/k!*log(1+x)/(1-x).
O.g.f. for n-th row is Sum_{i=0..n} binomial(n, i)*A024167(n-i)*y^i.
MAPLE
G:=exp(x*y)*ln(1+x)/(1-x): Gser:=series(G, x=0, 12): for n from 1 to 10 do P[n]:=n!*coeff(Gser, x^n) od: for n from 1 to 10 do seq(coeff(y*P[n], y^k), k=1..n) od; # Emeric Deutsch, Dec 14 2004
CROSSREFS
Cf. A073107.
Sequence in context: A151960 A281300 A115320 * A077057 A359684 A030660
KEYWORD
easy,nonn,tabl
AUTHOR
Vladeta Jovovic, Aug 26 2002
EXTENSIONS
More terms from Emeric Deutsch, Dec 14 2004
STATUS
approved