# A012752 (b-file synthesized from sequence entry)
0 1
1 2
2 16
3 398
4 18072
5 1465962
6 169054092
7 28688618814
8 6235376638608
9 1810793539845714
10 636329871517885332
11 282006422882452989030
12 145933818284739352119000
13 91644646853849910546846330