# A056383 (b-file synthesized from sequence entry)
1 4
2 12
3 36
4 144
5 276
6 2124
7 2796
8 17760
9 44184
10 263004
11 419868
12 4278000
13 5593996
14 44748804
15 134390724
16 539036160
17 1073758356
18 11453725416
19 15271054956
20 137575549680
21 366528035564
22 1759219864020
23 3198580043436