0,5

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+5))/[(1-C(t)^(k+2))*(1-C(t)^(k+4))], with tB(t) the g.f. of A052701 and C(t) the g.f. of A101478.

1,1,3,12,56,288,1584,9152,54912,339456,

1,2,7,31,156,851,4909,29506,183043,1164387,

1,2,8,39,211,1219,7371,46099,295915,1939395,

1,2,8,40,223,1327,8250,52938,347941,2330532,

1,2,8,40,224,1343,8427,54625,362833,2456261,

1,2,8,40,224,1344,8447,54887,365688,2484384,

1,2,8,40,224,1344,8448,54911,366051,2488831,

1,2,8,40,224,1344,8448,54912,366079,2489311,

1,2,8,40,224,1344,8448,54912,366080,2489343,

1,2,8,40,224,1344,8448,54912,366080,2489344,

Rows converge to A052701. First row is A000257.

Adjacent sequences: A101474 A101475 A101476 this_sequence A101478 A101479 A101480

Sequence in context: A109091 A138507 A109200 this_sequence A077887 A059379 A065487

nonn,tabl

Ralf Stephan, Jan 21 2005