# A273461 (b-file synthesized from sequence entry)
0 1
1 2
2 9
3 40
4 484
5 9717
6 338724
7 21624680
8 2504301849
9 520443847520
10 195145309791364
11 131850659243316222
12 160668896658179472676
13 352891729183598844656996
14 1397187513066371784602204416
15 9972288382286063615850619475640