# A002673 (b-file synthesized from sequence entry)
1 1
2 1
3 13
4 41
5 671
6 73
7 597871
8 7913
9 28009
10 792451
11 170549237
12 19397633
13 317733228541
14 9860686403
15 75397891
16 170314355593
17 2084647712458321
18 29327731093
19 168856464709124011
20 3063310184201
21 499338236699611
22 535201577273701757
23 23571643935246013553