# A108153 (b-file synthesized from sequence entry)
0 0
1 1
2 3
3 11
4 40
5 145
6 526
7 1908
8 6921
9 25105
10 91065
11 330326
12 1198213
13 4346356
14 15765820
15 57188385
16 207443151
17 752472043
18 2729490816
19 9900859685
20 35914032730
21 130273308376
22 472548850273
23 1714107200301
24 6217692609825
25 22553841080350
26 81811015661001