# A026989 (b-file synthesized from sequence entry)
3 1
4 14
5 115
6 660
7 3805
8 20520
9 109779
10 551774
11 2921313
12 14482320
13 71576096
14 349292330
15 1804636693
16 8745745676
17 42107640345
18 203559063050
19 1040682784201
20 5002217935308
21 23823427871991
22 114772726273528
23 583453635620973
24 2795288971320092
25 13246283464422706
26 63736681240596050