# A333631 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 2
4 6
5 40
6 238
7 1760
8 14076
9 131732
10 1308670
11 14678452
12 176166906
13 2317481348
14 32416648496
15 490915956484
16 7846449011500
17 134291298372632
18 2416652824505150
19 46141903780094080
20 922528719841017424
21 19456439433050482412
22 427837767407051523776
23 9873256397944571377332