# A048351 (b-file synthesized from sequence entry)
1 4
2 26
3 216
4 1291
5 5164
6 68313
7 163284
8 785294
9 3559026
10 26393686
11 129099069
12 254296413
13 816435342
14 4081257976
15 80413106314
16 215329205326
17 2463064689907
18 5165911014784
19 24832773982716
20 81401883640163