# A164769 (b-file synthesized from sequence entry)
0 1
1 8
2 56
3 392
4 2744
5 19208
6 134456
7 941192
8 6588316
9 46118016
10 322824768
11 2259763968
12 15818281920
13 110727512448
14 775089360192
15 5425602932736
16 37979062409652
17 265852330035768
18 1860958562459976
19 13026655702912824