# A113145 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 8
4 60
5 708
6 11428
7 232756
8 5704964
9 163192820
10 5331728964
11 195776203764
12 7978838333188
13 357313060904692
14 17438518614448580
15 921145685670017012
16 52355425184381107332
17 3185815887918686343924
18 206633438251087758833476