# A266735 (b-file synthesized from sequence entry)
0 1
1 1
2 6
3 90
4 2520
5 102011
6 5176504
7 307027744
8 20472135280
9 1496594831506
10 117857270562568
11 9869468603141427
12 870255083860881152
13 80185525536941657225
14 7673807618627318341436
15 759049283017632212000140
16 77292554293281131959377376
17 8075621155990277422800518076