# A019211 (b-file synthesized from sequence entry)
3 0
4 0
5 4
6 6
7 2
8 28
9 58
10 88
11 238
12 716
13 1394
14 3374
15 9384
16 22840
17 55476
18 147990
19 382072
20 982280
21 2579054
22 6811874
23 17916322
24 47414580
25 126051490
26 335438336
27 893860020
28 2389827522
29 6400045834
30 17164212606
31 46122255648