# A174494 (b-file synthesized from sequence entry)
1 1
2 4
3 28
4 274
5 3400
6 50734
7 880312
8 17357736
9 382463824
10 9298086490
11 246914949376
12 7104423326356
13 220000621675912
14 7290852811359654
15 257332393857067720
16 9632914084301343304
17 381050245422453157408