A138576 - OEIS

A138576 as a simple table

n	a(n)
1	2
2	3
3	4
4	7
5	9
6	10
7	16
8	31
9	45
10	54
11	64
12	261
13	304
14	640
15	1102
16	1141
17	1609
18	2127
19	2212
20	4845
21	4971
22	5607
23	9969
24	10851
25	11605
26	22249
27	43122
28	55252
29	66025
30	108046
31	378420
32	429717
33	628894
34	699135
35	1488111
36	1510689
37	3486297
38	6733459
39	10498006
40	12018292
41	12982476
42	15201229
43	16291329
44	18578334

[2,3,4,7,9,10,16,31,45,54,64,261,304,640,1102, 1141,1609,2127,2212,4845,4971,5607,9969,10851, 11605,22249,43122,55252,66025,108046,378420, 429717,628894,699135,1488111,1510689,3486297, 6733459,10498006,12018292,12982476,15201229, 16291329,18578334]