# A151246 (b-file synthesized from sequence entry)
0 1
1 4
2 16
3 72
4 336
5 1580
6 7574
7 36598
8 177752
9 868704
10 4258402
11 20936128
12 103202090
13 509559842
14 2520187796
15 12481010184
16 61875264382
17 307056555384
18 1524967205316
19 7578821252920
20 37688896375138
21 187520140021006
22 933438702735224
23 4648385161985330
24 23156509718095598
25 115394598227196336