# A012377 (b-file synthesized from sequence entry)
0 2
1 12
2 310
3 15960
4 1517098
5 224269540
6 48197922526
7 14130438821296
8 5428021401209682
9 2643726413982309052
10 1592189299187949292422
11 1161629303960888128771592
12 1009558061720938140021739386