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A124551 Row 1 of tables A124550 and A124560; also equals the antidiagonal sums of table A124550. 16
1, 1, 2, 5, 16, 66, 348, 2321, 19437, 203554, 2661035, 43399794, 883165898, 22436796424, 712153021345, 28264751131084, 1403965520612428, 87352867349503436, 6813355443494722779, 666712967112785700169 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

In table A124550, the g.f. of row n, R_n(y), simultaneously satisfies: R_n(y) = [ Sum_{k>=0} y^k * R_{n*k}(y) ]^n for n>=0.

LINKS

Table of n, a(n) for n=0..19.

FORMULA

G.f.: A(x) = Sum_{k>=0} y^k * R_{k}(y), where R_n(x) is the g.f. of row n in table A124550.

CROSSREFS

Cf. A124550, A124560; other rows: A124552, A124553, A124554, A124555, A124556.

Sequence in context: A306026 A091139 A084785 * A005157 A019502 A019503

Adjacent sequences:  A124548 A124549 A124550 * A124552 A124553 A124554

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Nov 07 2006

STATUS

approved

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Last modified February 16 20:45 EST 2019. Contains 320189 sequences. (Running on oeis4.)