# A121423 (b-file synthesized from sequence entry)
0 1
1 3
2 18
3 169
4 2190
5 36360
6 737051
7 17645187
8 487025244
9 15219471545
10 530951735025
11 20447695079658
12 861389893507518
13 39394187817328680
14 1943446826192453505
15 102863050524539640435
16 5813722327999905078450