# A165185 (b-file synthesized from sequence entry)
0 1
1 5
2 20
3 80
4 320
5 1280
6 5120
7 20480
8 81920
9 327670
10 1310640
11 5242410
12 20969040
13 83873760
14 335485440
15 1341903360
16 5367459840
17 21469224960
18 85874442330
19 343487939580
20 1373912440470
21 5495492494980
22 21981340930320
23 87922847594880