# A138964 (b-file synthesized from sequence entry)
0 0
1 2
2 28
3 80
4 208
5 1664
6 28864
7 137600
8 1660672
9 3207680
10 45816832
11 245602304
12 1239224320
13 1206665216
14 9653321728
15 390683230208
16 2185095872512
17 554107535360
18 38286179172352
19 306289433378816
20 1231595987009536
21 9852767896076288
22 78822143168610304
23 367333737664348160