# A074522 (b-file synthesized from sequence entry)
0 3
1 16
2 118
3 946
4 7858
5 66826
6 578098
7 5062906
8 44726338
9 397498186
10 3547250578
11 31743856666
12 284606318818
13 2554926522346
14 22955156619058
15 206361317079226
16 1855841298759298
17 16694108359111306
18 150196195253667538