# A149712 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 17
4 71
5 285
6 1267
7 5415
8 24929
9 109791
10 514181
11 2325529
12 10975213
13 50591721
14 240309245
15 1121609839
16 5360709931
17 25239934277
18 121243984411
19 574860107777
20 2771889294123
21 13219673633385
22 63932970161935
23 306380916893023
24 1485486370030791
25 7146790584746631
26 34728645396419379
27 167628468993741295