# A122371 (b-file synthesized from sequence entry)
0 1
1 6
2 41
3 285
4 1989
5 13901
6 97215
7 680079
8 4758408
9 33297267
10 233014444
11 1630701426
12 11412409945
13 79870754268
14 558989013403
15 3912210491549
16 27380636068267
17 191631324294463
18 1341190961828143
19 9386756237545989