# A077822 (b-file synthesized from sequence entry)
0 1
1 4
2 16
3 63
4 246
5 960
6 3745
7 14608
8 56980
9 222255
10 866922
11 3381492
12 13189753
13 51447580
14 200674984
15 782747199
16 3053161710
17 11909076696
18 46452209617
19 181190182360
20 706745329324
21 2756710954287
22 10752749215554
23 41941871168172
24 163597283059753
25 638122961114884