# A028546 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 5986
4 70930
5 684823
6 4554895
7 25784285
8 124544429
9 541577200
10 2142536303
11 7874214410
12 27111618590
13 88375985276
14 274361915435
15 816223635550
16 2336827590285
17 6464455999320
18 17332496822417
19 45169505417075
20 114679191847782
21 284240995638700
22 689000215557685