# A024499 (b-file synthesized from sequence entry)
2 6
3 10
4 23
5 63
6 184
7 572
8 1838
9 6077
10 20528
11 70543
12 245832
13 866716
14 3085892
15 11079822
16 40072026
17 145850388
18 533831488
19 1963625766
20 7255080464
21 26912893722
22 100195188748
23 374246851254
24 1402069725352
25 5267108601573
26 19836741317924