# A135648 (b-file synthesized from sequence entry)
1 1
2 1922
3 3640691
4 6895473332
5 13060026530591
6 24735690249234458
7 46849397332052003953
8 88732758546906507089208
9 168059844687840924491185218
10 318305345838770710986638404668
11 602870325018631726608694781154978
12 1141836395585288490196867923237849768