# A203570 (b-file synthesized from sequence entry)
0 4
1 7
2 27
3 84
4 270
5 826
6 2488
7 7353
8 21461
9 61960
10 177344
11 503892
12 1422892
13 3996619
14 11173935
15 31114236
16 86328978
17 238764238
18 658478176
19 1811322045
20 4970928809
21 13613135152
22 37208048132
23 101518052904
24 276527670100
25 752102592271