# A149152 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 9
4 38
5 118
6 498
7 1693
8 7476
9 27274
10 121508
11 459786
12 2088146
13 8159974
14 37273054
15 148506527
16 685469238
17 2782946570
18 12891587770
19 52985836682
20 247036106682
21 1027949193490
22 4804382145816
23 20163657925260
24 94647795901516
25 400712095605404
26 1884314609352340
27 8028421804207614
28 37869092843852154