# A367748 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 13
4 73
5 501
6 4051
7 40153
8 434673
9 5231593
10 71641891
11 1051099941
12 16673401273
13 289579557853
14 5336892479283
15 104679769486321
16 2199654959898721
17 48682858073000913
18 1135029742772833603
19 27968526823231736893
20 721419709386600131241