# A150570 (b-file synthesized from sequence entry)
0 1
1 2
2 7
3 26
4 108
5 453
6 1967
7 8706
8 39090
9 177790
10 816687
11 3781530
12 17611689
13 82495489
14 388239450
15 1834554841
16 8700456703
17 41396000957
18 197502228696
19 944598518988
20 4527944745628
21 21748772881792
22 104656528669946
23 504467991736809
24 2435414066188900
25 11773906700835303
26 56994025754728403
27 276223254953266320