# A026124 (b-file synthesized from sequence entry)
2 1
3 2
4 7
5 20
6 59
7 170
8 489
9 1400
10 4002
11 11428
12 32626
13 93160
14 266136
15 760800
16 2176644
17 6232896
18 17864841
19 51253794
20 147188535
21 423098404
22 1217371023
23 3505992050
24 10106384621
25 29158627592
26 84200265555
27 243345531806
28 703858089717