# A281454 (b-file synthesized from sequence entry)
0 1
1 1
2 9
3 55
4 441
5 4316
6 46867
7 566714
8 7550601
9 109118728
10 1696640501
11 28209128344
12 498557098921
13 9320449092072
14 183575505529431
15 3796015849264216
16 82156098504947473
17 1856012774517648896
18 43663382492497648777
19 1067393396478808265656
20 27062739020373087036281
21 710410408414549934445376
22 19277762831507022675509139