# A002336 (b-file synthesized from sequence entry)
0 0
1 2
2 6
3 12
4 24
5 40
6 72
7 126
8 240
9 272
10 336
11 438
12 648
13 906
14 1422
15 2340
16 4320
17 5346
18 7398
19 10668
20 17400
21 27720
22 49896
23 93150
24 196560
25 196656