# A042240 (b-file synthesized from sequence entry)
0 25
1 51
2 127
3 305
4 15377
5 31059
6 77495
7 186049
8 9379945
9 18945939
10 47271823
11 113489585
12 5721751073
13 11556991731
14 28835734535
15 69228460801
16 3490258774585
17 7049746009971
18 17589750794527