# A056421 (b-file synthesized from sequence entry)
1 4
2 6
3 16
4 45
5 72
6 404
7 456
8 2550
9 5144
10 26880
11 38568
12 367170
13 431776
14 3202964
15 8993712
16 33857520
17 63177816
18 636456776
19 803796696
20 6886253964
21 17456593904
22 79965511980
23 139069427016
24 1466861335900