# A090357 (b-file synthesized from sequence entry)
0 1
1 4
2 26
3 244
4 3131
5 52600
6 1111940
7 28559320
8 865622825
9 30250881420
10 1196941704454
11 52860066623036
12 2576115583371739
13 137274420821505776
14 7937914900025008984
15 494941882189888642832
16 33096552232229291234923