# A029872 (b-file synthesized from sequence entry)
0 16
1 72
2 288
3 1200
4 5376
5 25480
6 125504
7 634608
8 3269680
9 17086168
10 90282240
11 481347152
12 2585485504
13 13974825960
14 75941188736
15 414593263952
16 2272626444528
17 12502223573304
18 68996534259040
19 381858968527680
20 2118806030647328
21 11783826597027256
22 65674579024955904