# A148572 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 6
4 19
5 54
6 183
7 632
8 2307
9 8753
10 34000
11 135893
12 552498
13 2288861
14 9619432
15 40955833
16 176439889
17 767614597
18 3370686080
19 14919375855
20 66519132927
21 298537169659
22 1347748022530
23 6117531357164
24 27904394951401
25 127858017889598
26 588274930715447
27 2716966368936216
28 12592645826466517