Closed AlexDaniel closed 5 years ago
A001190 / Wedderburn-Etherington numbers: unlabeled binary rooted trees (every node has out-degree 0 or 2) with n endpoints (and 2n-1 nodes in all).
The sequence is not implemented yet.
0 1 1 1 2 3 6 11 23 46 98 207 451 983 2179 4850 10905 24631 56011 127912 293547 676157 1563372 3626149 8436379 19680277 46026618 107890609 253450711 596572387 1406818759 3323236238 7862958391 18632325319 44214569100
A001190 / Wedderburn-Etherington numbers: unlabeled binary rooted trees (every node has out-degree 0 or 2) with n endpoints (and 2n-1 nodes in all).
The sequence is not implemented yet.
0 1 1 1 2 3 6 11 23 46 98 207 451 983 2179 4850 10905 24631 56011 127912 293547 676157 1563372 3626149 8436379 19680277 46026618 107890609 253450711 596572387 1406818759 3323236238 7862958391 18632325319 44214569100