# A007985 (b-file synthesized from sequence entry)
1 2
2 2
3 6
4 22
5 58
6 146
7 414
8 1206
9 3410
10 9634
11 27670
12 79926
13 230666
14 667058
15 1936174
16 5632662
17 16408866
18 47875650
19 139908774
20 409404630
21 1199368026
22 3517351890
23 10325547582
24 30339113718
25 89217594738
26 262561101282
27 773248631222
28 2278737199606