# A153470 (b-file synthesized from sequence entry)
1 1
2 30
3 3750
4 1953750
5 4242798750
6 38404604583750
7 1448977637979903750
8 227870224522898915943750
9 149369176223578379939728893750
10 408114381491174443782294469248048750
11 4647830909678374872940213803359098309308750