# A137789 (b-file synthesized from sequence entry)
4 127
5 4607
6 50479
7 446783
8 3622207
9 28040447
10 211134799
11 1561328063
12 11403051487
13 82538901887
14 593482158319
15 4245770823743
16 30254894691967
17 214923605948927
18 1522969836817039
19 10770185918341823
20 76039637426447647
21 536127667775741567