# A081496 (b-file synthesized from sequence entry)
1 5
2 14
3 46
4 160
5 574
6 2100
7 7788
8 29172
9 110110
10 418132
11 1595620
12 6113744
13 23505356
14 90633800
15 350351640
16 1357278300
17 5268292830
18 20483876820
19 79765662900
20 311038321440
21 1214362277700
22 4746455801880
23 18570960418920
24 72728638093800