# A005567 (b-file synthesized from sequence entry)
0 10
1 70
2 308
3 1092
4 3414
5 9834
6 26752
7 69784
8 176306
9 434382
10 1048812
11 2490636
12 5833006
13 13500754
14 30933368
15 70255008
16 158335434
17 354419190
18 788529700
19 1744831060
20 3841983110
21 8422163130
22 18387829488