# A274784 (b-file synthesized from sequence entry)
0 1
1 1
2 13
3 49
4 661
5 4021
6 49141
7 382033
8 4387909
9 39174421
10 435947953
11 4223039173
12 46369242349
13 472149790477
14 5166034019173
15 54291944826769
16 594930602047909
17 6384197552441317
18 70225109775221041
19 764509591210501189
20 8448837429195472441
21 92938878099911462521
22 1032029676943832312473