# A247173 (b-file synthesized from sequence entry)
0 1
1 1
2 7
3 25
4 101
5 397
6 1583
7 6337
8 25513
9 103161
10 418727
11 1705129
12 6963165
13 28504981
14 116941727
15 480667137
16 1979039633
17 8160609457
18 33696358983
19 139308985465
20 576583448021
21 2388853677981
22 9906585874127
23 41118073118785
24 170799570803001
25 710003165365417