# A024496 (b-file synthesized from sequence entry)
1 3
2 7
3 33
4 195
5 1292
6 9177
7 68310
8 525915
9 4153380
10 33460284
11 273904969
12 2271800037
13 19050406788
14 161242554550
15 1375709203260
16 11819200090635
17 102162535941492
18 887830494976788
19 7752586858050900
20 67986848888695660
21 598522586288243760
22 5287559893638230385