# A037774 (b-file synthesized from sequence entry)
1 3
2 19
3 114
4 686
5 4119
6 24715
7 148290
8 889742
9 5338455
10 32030731
11 192184386
12 1153106318
13 6918637911
14 41511827467
15 249070964802
16 1494425788814
17 8966554732887
18 53799328397323
19 322795970383938
20 1936775822303630