# A365751 (b-file synthesized from sequence entry)
0 1
1 2
2 8
3 38
4 201
5 1134
6 6688
7 40734
8 254237
9 1617572
10 10452416
11 68408626
12 452530659
13 3020870352
14 20324167488
15 137672551630
16 938154745773
17 6426806842566
18 44234352581896
19 305743015718028
20 2121318029754770
21 14769052147618740
22 103148538125870880