# A148790 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 25
5 77
6 257
7 853
8 2946
9 10178
10 36005
11 127635
12 459307
13 1657395
14 6042087
15 22089132
16 81346477
17 300383933
18 1115251580
19 4151032922
20 15515158110
21 58122268630
22 218459019113
23 822782085889
24 3107215915981
25 11755843600909
26 44576827929909
27 169308082883825
28 644271153070229
29 2455271638906533