# A155661 (b-file synthesized from sequence entry)
0 1
1 4
2 52
3 658
4 7600
5 83194
6 882352
7 9176458
8 94235200
9 959646394
10 9717524752
11 98022673258
12 986158712800
13 9903110989594
14 99321776927152
15 995252438490058
16 9966767069430400
17 99767369486012794
18 998371586402089552