# A278128 (b-file synthesized from sequence entry)
0 132
1 420
2 996
3 2148
4 4452
5 9060
6 18276
7 36708
8 73572
9 147300
10 294756
11 589668
12 1179492
13 2359140
14 4718436
15 9437028
16 18874212
17 37748580
18 75497316
19 150994788
20 301989732
21 603979620
22 1207959396
23 2415918948
24 4831838052
25 9663676260
26 19327352676
27 38654705508