References to A001895

Number of rooted planar 2-trees with n nodes.
1, 2, 4, 12, 34, 111, 360, 1226, 4206, 14728, 52024, 185824, 668676, 2424033

1 seqfan posts

Tue Jan 4 05:30:45 CET 2011    [seqfan] Unlabeled super-Catalan - was unlabeled Motzkin
Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
Links to OEIS content are included according to The OEIS End-User License Agreement .