A145539 - OEIS

A145539 as a simple table

n	a(n)
1	499999
2	166666
3	66666
4	38094
5	20778
6	15983
7	11283
8	9502
9	7434
10	5646
11	5098
12	4136
13	3617
14	3356
15	2982
16	2575
17	2261
18	2143
19	1910
20	1775
21	1700
22	1553
23	1460
24	1354
25	1244
26	1195
27	1171
28	1130
29	1109
30	1074
31	964
32	937
33	898
34	886
35	832
36	820
37	794
38	763
39	745
40	719
41	697
42	689
43	654

[499999,166666,66666,38094,20778,15983,11283,9502, 7434,5646,5098,4136,3617,3356,2982,2575,2261,2143, 1910,1775,1700,1553,1460,1354,1244,1195,1171,1130, 1109,1074,964,937,898,886,832,820,794,763,745,719, 697,689,654]