# A083410 (b-file synthesized from sequence entry)
1 1
2 4
3 22
4 154
5 1306
6 12994
7 148282
8 1908274
9 27333706
10 431220034
11 7428550042
12 138737478994
13 2792050329706
14 60231133487074
15 1386484468239802
16 33921605427779314
17 878976357571495306
18 24046780495646314114
19 692622345890928153562
20 20950628198687114521234
21 663992311200423614606506