# A045474 (b-file synthesized from sequence entry)
1 4
2 8
3 14
4 24
5 42
6 76
7 138
8 254
9 470
10 876
11 1638
12 3070
13 5766
14 10850
15 20436
16 38550
17 72806
18 137670
19 260612
20 493824
21 936690
22 1778360
23 3379372
24 6427190
25 12232928
26 23300652
27 44414366
28 84713872
29 161686324
30 308780220