# A367494 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 7
4 37
5 272
6 2637
7 32469
8 493602
9 9062503
10 197409097
11 5027822588
12 147896295785
13 4972353491993
14 189357434418082
15 8104194176872583
16 387121098095180237
17 20513320778472547576
18 1199236185075846230469
19 76970026071431034905229
20 5399593095642890354948802