# A153927 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 10
4 16
5 32
6 84
7 364
8 1408
9 7139
10 31239
11 217079
12 1318253
13 12282116
14 97242555
15 1151164326
16 12499753964
17 202416004411
18 2931538091352
19 63055463078232
20 1202866099324497
21 34468364489176178