# A149462 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 13
4 51
5 205
6 863
7 3735
8 16485
9 74044
10 336717
11 1547700
12 7175187
13 33505829
14 157423145
15 743479522
16 3527237161
17 16799557266
18 80288255265
19 384876372364
20 1849943233443
21 8913270844596
22 43037808241896
23 208211887956508
24 1009073596684092
25 4898153235733664
26 23810753170107055
27 115902118316694161