# A378612 (b-file synthesized from sequence entry)
0 1
1 3
2 27
3 264
4 2703
5 28443
6 304740
7 3306852
8 36225519
9 399755001
10 4437142467
11 49485052224
12 554059164036
13 6224177431332
14 70120015345512
15 791898021185484
16 8962485528377583
17 101626868754849381
18 1154295872365035537
19 13130360954151723480
20 149562006735075309783