# A074434 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 4
5 36
6 214
7 1157
8 6312
9 33048
10 167928
11 883872
12 4881168
13 27546779
14 155696585
15 877515379
16 4936018176
17 27770211072
18 156728297088
19 889046473445
20 5067822213734
21 28988793435209
22 166189019079168
23 954240788994048
24 5486915505475584
25 31597040041716690