# A036252 (b-file synthesized from sequence entry)
0 1
1 3
2 6
3 6
4 16
5 39
6 114
7 335
8 1081
9 3574
10 12408
11 44076
12 160915
13 598244
14 2263400
15 8681464
16 33713947
17 132305267
18 524095596
19 2093208435
20 8422013745
21 34110403728
22 138979989162
23 569339728312
24 2343898451275
25 9693334574919