# A049394 (b-file synthesized from sequence entry)
0 1
1 30
2 825
3 22000
4 577500
5 15015000
6 387887500
7 9974250000
8 255590156250
9 6531748437500
10 166559585156250
11 4239698531250000
12 107759004335937500
13 2735420879296875000
14 69362458010742187500
15 1757182269605468750000