# A121693 (b-file synthesized from sequence entry)
1 0
2 0
3 1
4 12
5 57
6 216
7 741
8 2412
9 7617
10 23616
11 72381
12 220212
13 666777
14 2012616
15 6062421
16 18236412
17 54807537
18 164619216
19 494250861
20 1483539012
21 4452189897
22 13359715416
23 40085437701
24 120268896012
25 360831853857
26 1082545893216