# A177199 (b-file synthesized from sequence entry)
0 1
1 8
2 15
3 92
4 421
5 2535
6 14561
7 90770
8 568023
9 3668869
10 23962891
11 159056633
12 1066354423
13 7222075575
14 49299161087
15 338967663280
16 2344974625813
17 16312100074467
18 114021548709433
19 800494865098307
20 5641966696544221