# A003615 (b-file synthesized from sequence entry)
1 1
2 1
3 3
4 10
5 17
6 38
7 106
8 253
9 716
10 1903
11 5053
12 13786
13 39293
14 107641
15 302807
16 860099
17 2450684
18 7038472
19 20316895
20 58849665
21 171217429
22 499926666
23 1464276207
24 4301706250
25 12671810107
26 37419912977
27 110759884262
28 328525197554