# A000507 (b-file synthesized from sequence entry)
6 61
7 1385
8 19028
9 206276
10 1949762
11 16889786
12 137963364
13 1081702420
14 8236142455
15 61386982075
16 450403628440
17 3266265481144
18 23480284103492
19 167687984079924
20 1191656966048088
21 8436830209386360
22 59563995267159825
23 419628657826253805