# A152437 (b-file synthesized from sequence entry)
0 0
1 1
2 9
3 307
4 2610
5 88741
6 754299
7 25646167
8 217992420
9 7411742281
10 62999809389
11 2141993519227
12 18206944913430
13 619036127056621
14 5261807079981279
15 178901440719363487
16 1520662246114589640
17 51702516367896047761