# A151023 (b-file synthesized from sequence entry)
0 1
1 2
2 10
3 40
4 176
5 808
6 3720
7 17152
8 81440
9 384448
10 1824448
11 8758400
12 42003840
13 201892480
14 977114240
15 4726665216
16 22901914112
17 111430159360
18 542141168640
19 2640679776256
20 12898118598656
21 63006347137024
22 308047467597824
23 1509004351340544
24 7393407993561088
25 36248756250542080
26 177971449582911488