# A153961 (b-file synthesized from sequence entry)
0 1
1 2
2 2
3 4
4 6
5 14
6 27
7 80
8 210
9 805
10 2370
11 12127
12 45783
13 276334
14 1343098
15 10464249
16 60421447
17 607880695
18 4555562667
19 54131941863
20 525633914241
21 8090369486591
22 92774939175347
23 1849817523944554
24 27457199067870165
25 646952049880982614