# A077827 (b-file synthesized from sequence entry)
0 1
1 3
2 9
3 27
4 79
5 231
6 675
7 1971
8 5755
9 16803
10 49059
11 143235
12 418195
13 1220979
14 3564819
15 10407987
16 30387571
17 88720755
18 259032627
19 756281907
20 2208070579
21 6446770227
22 18822245427
23 54954172467
24 160446376243
25 468445588275
26 1367692273971
27 3993168476979
28 11658612678451