# A026017 (b-file synthesized from sequence entry)
2 1
3 5
4 21
5 83
6 319
7 1209
8 4550
9 17068
10 63954
11 239666
12 898909
13 3375825
14 12697035
15 47833905
16 180510210
17 682341000
18 2583591150
19 9798281910
20 37218303330
21 141585223494
22 539395269462
23 2057771255210
24 7860697923436
25 30065829471048
26 115135255095140
27 441410428339972