# A201953 (b-file synthesized from sequence entry)
2 1
3 3
4 15
5 90
6 629
7 5019
8 45030
9 448776
10 4919321
11 58825415
12 762089899
13 10633219662
14 158974192987
15 2535484008225
16 42970371055268
17 771162539117408
18 14609924404202130
19 291386317037291622
20 6102681801481066642
21 133910606028043519500
22 3072216586896101950757