# A153908 (b-file synthesized from sequence entry)
0 1
1 2
2 1
3 2
4 13
5 14
6 44
7 452
8 799
9 4626
10 86710
11 273752
12 2781435
13 91537826
14 508729354
15 9157300668
16 533484637064
17 5243172893020
18 166735484693868
19 17161483714082216
20 298035643554185774
21 16752470174524734906
22 3047662126271875592300