# A012827 (b-file synthesized from sequence entry)
0 1
1 3
2 45
3 1071
4 56697
5 3279419
6 376156261
7 35274762407
8 8003761282417
9 853554115621363
10 450081179390735645
11 17369944484313961631
12 62576187908645427074025
13 -11407841475969056406389973