0,3

M. Bousquet-Melou, Limit laws for embedded trees

G.f. of k-th row: A(t)=B(t)*(1-C(t)^(k+1))*(1-C(t)^(k+4))/[(1-C(t)^(k+2))*(1-C(t)^(k+3))], with B(t) the g.f. of A005159 and C(t) the g.f. of A101487.

1,2,9,54,378,2916,24057,208494,1876446,17399772,

1,3,17,119,932,7838,69275,635279,5994584,57872666,

1,3,18,134,1111,9833,90959,868827,8504314,84866778,

1,3,18,135,1133,10176,95635,928442,9236144,93646430,

1,3,18,135,1134,10205,96191,937361,9365984,95427597,

1,3,18,135,1134,10206,96227,938179,9381050,95673739,

1,3,18,135,1134,10206,96228,938222,9382179,95697199,

1,3,18,135,1134,10206,96228,938223,9382229,95698688,

Rows converge to A005159. First row is A000168.

Sequence in context: A078045 A057300 A076655 this_sequence A086606 A076112 A122454

Adjacent sequences: A101483 A101484 A101485 this_sequence A101487 A101488 A101489

nonn,tabl

Ralf Stephan, Jan 21 2005