# A149124 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 9
4 34
5 103
6 379
7 1309
8 4922
9 18125
10 69547
11 265723
12 1038766
13 4073721
14 16165622
15 64471827
16 259161978
17 1047151561
18 4255482729
19 17363577413
20 71174281416
21 292805890291
22 1209181501440
23 5008416381237
24 20807946320760
25 86679404708181
26 362031195792493
27 1515620560170121
28 6358794868736378