# A151271 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 9
4 32
5 92
6 324
7 1013
8 3612
9 11790
10 42448
11 142522
12 516780
13 1769552
14 6452240
15 22416043
16 82098940
17 288430178
18 1060206808
19 3757982994
20 13855171352
21 49467576888
22 182845418208
23 656756066722
24 2432861173012
25 8782954641748
26 32597120211472
27 118191603519288
28 439389746023616
29 1599141417261936