A014168 Apply partial sum operator twice to binary rooted tree numbers.

1, 3, 7, 14, 26, 47, 84, 149, 264, 468, 831, 1479, 2637, 4709, 8420, 15069, 26987, 48356, 86677, 155408, 278694, 499851, 896594, 1608353, 2885280, 5176183, 9286284, 16660260, 29890069, 53626053, 96211592, 172615925, 309696044, 555637311, 996891328, 1788564939

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn

Links

• Index entries for sequences related to rooted trees
• Index entries for sequences related to trees

Crossrefs

Cf. A002572. Partial sums of A014167, not of A173404.

Formula

G.f.: (B(x)-x)/x(1-x)^2 where B(x) is g.f. of A002572.