# A144271 (b-file synthesized from sequence entry)
1 1
2 2
3 5
4 21
5 129
6 1099
7 11647
8 148292
9 2190302
10 36842892
11 694276152
12 14488348603
13 331537914373
14 8254117606799
15 222087256536602
16 6421589319659283
17 198565371839434761
18 6538245667687424041
19 228396692050813678534
20 8436237099236470594589