# A074410 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 4
5 11
6 45
7 169
8 576
9 1948
10 6579
11 23133
12 84820
13 317755
14 1198665
15 4509419
16 16908288
17 63409935
18 238612920
19 902444517
20 3429289164
21 13076666409
22 49977848925
23 191312873561
24 733365665600
25 2815437297416
26 10825961287995
27 41694907460224
28 160823214491940