# A244670 (b-file synthesized from sequence entry)
1 1
2 3
3 392
4 11250
5 131769
6 1568294784
7 501126
8 119439360000000
9 6566468639062500
10 39226324511250000
11 15780962
12 162778775259375000
13 2966827112704
14 22417760034702144000000000000
15 1801703513076518898
16 30261936128
17 3531477204506250000
18 5876813016539072244