# A054190 (b-file synthesized from sequence entry)
0 1
1 3
2 6
3 12
4 26
5 62
6 158
7 418
8 1129
9 3087
10 8507
11 23573
12 65611
13 183333
14 514137
15 1446723
16 4083725
17 11560877
18 32816588
19 93385330
20 266360509
21 761373941
22 2180721568
23 6257750542
24 17988623409
25 51795127277
26 149363509694
27 431341949970