# A106793 (b-file synthesized from sequence entry)
0 1
1 26
2 650
3 15600
4 358800
5 7893600
6 165765600
7 3315312000
8 62990928000
9 1133836704000
10 19275223968000
11 308403583488000
12 4626053752320000
13 64764752532480000
14 841941782922240000
15 10103301395066880000