# A157886 (b-file synthesized from sequence entry)
0 1
1 21
2 110
3 4599
4 11990
5 249501
6 1295030
7 107308383
8 138627830
9 2859244731
10 14712346550
11 604396290309
12 1548795089270
13 31691625960561
14 161831110601270
15 26399564969194431
16 16795789262584310
17 341432673486734991
18 1732778326412587190
19 70259641081276811619