# A211211 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 30
4 205
5 1750
6 17766
7 207942
8 2746815
9 40315858
10 649688072
11 11387466948
12 215440517656
13 4371810051908
14 94649397546302
15 2176321870192342
16 52938365091640943
17 1357592080006964806
18 36593629200726397630
19 1033979281229140895582
20 30552322294916306960625