# A275912 (b-file synthesized from sequence entry)
0 1
1 2
2 16
3 166
4 1934
5 24076
6 312900
7 4191528
8 57424848
9 800511928
10 11314617512
11 161736519334
12 2333709074866
13 33940921354676
14 496985854805560
15 7320036386083320
16 108370564070861790
17 1611667048718909412
18 24065028942496468872
19 360628842425757805380