# A007975 (b-file synthesized from sequence entry)
4 2
5 55
6 389
7 1563
8 4642
9 11407
10 24600
11 48204
12 87758
13 150707
14 246787
15 388445
16 591294
17 874603
18 1261822
19 1781142
20 2466090
21 3356159
22 4497473
23 5943487
24 7755722
25 10004535
26 12769924
27 16142368
28 20223702
29 25128027
30 30982655
31 37929089
32 46124038
33 55740467