# A150275 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 23
4 87
5 344
6 1430
7 6006
8 25638
9 111108
10 485979
11 2144374
12 9526239
13 42581108
14 191357708
15 863551551
16 3912874126
17 17792811362
18 81149740528
19 371155976937
20 1701830597050
21 7820751344589
22 36014935517232
23 166162951039617
24 767957329992987
25 3554955243640582
26 16480495255912614
27 76507069324161891