# A023905 (b-file synthesized from sequence entry)
0 1
1 210
2 8190
3 102830
4 570780
5 2140866
6 6527430
7 16213080
8 36584730
9 73035900
10 139912500
11 243455940
12 417269580
13 664812330
14 1050179130
15 1567036926
16 2347625490
17 3315827970
18 4752128290
19 6479581290
20 8930870676
21 11796130710
22 15862692300
23 20336924790