# A005619 (b-file synthesized from sequence entry)
2 16
3 240
4 6448
5 187184
6 5474096
7 160196400
8 4688357168
9 137211717424
10 4015706384176
11 117525666899760
12 3439564830058288
13 100664021209884464
14 2946083492311639856
15 86221550057181718320
16 2523402922444883797808
17 73851169513661744064304