# A138387 (b-file synthesized from sequence entry)
6 1
7 2
8 8
9 23
10 74
11 220
12 674
13 2011
14 6038
15 17980
16 53547
17 158907
18 471225
19 1394786
20 4124929
21 12185636
22 35972082
23 106111713
24 312835608
25 921809509
26 2715058701
27 7993741597
28 23527694230
29 69228383367
30 203648980297
31 598945442071