# A051143 (b-file synthesized from sequence entry)
1 1
2 2
3 3
4 4
5 5
6 26
7 2061
8 702993
9 307058572
10 3350187739
11 9088200428
12 43794115173
13 51932790219
14 378210209388
15 521301342188
16 297064987225918
17 19677201507658441
18 437852535314831447
19 1673669998972800207
20 29252504332047744188
21 42842701894337201916