# A000634 (b-file synthesized from sequence entry)
2 1
3 2
4 6
5 14
6 38
7 97
8 260
9 688
10 1856
11 4994
12 13550
13 36791
14 100302
15 273824
16 749316
17 2053247
18 5635266
19 15484532
20 42599485
21 117312742
22 323373356
23 892139389
24 2463252315
25 6806148956
26 18818714543
27 52065725034
28 144135111504
29 399232819042
30 1106385615943