# A148931 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 9
4 28
5 96
6 331
7 1178
8 4277
9 15668
10 58207
11 217827
12 820822
13 3113057
14 11858060
15 45369618
16 174201971
17 670880989
18 2590897603
19 10028967336
20 38902441680
21 151185031351
22 588509650239
23 2294305412573
24 8956328591359
25 35005542995118
26 136969955527081
27 536476427847843
28 2103186073322950