A025706 - cp's OEIS frontend

A025706 Index of 5^n within sequence of numbers of form 4^i*5^j.

n	a(n)
0	1
1	3
2	6
3	10
4	15
5	21
6	28
7	37
8	47
9	58
10	70
11	83
12	97
13	113
14	130
15	148
16	167
17	187
18	208
19	231
20	255
21	280
22	306
23	333
24	361
25	391
26	422
27	454
28	487
29	521
30	556
31	592
32	630
33	669
34	709
35	750
36	792
37	835
38	880
39	926
40	973
41	1021
42	1070
43	1120
44	1172
45	1225
46	1279
47	1334
48	1390
49	1447
50	1506
51	1566
52	1627
53	1689

[1, 3, 6, 10, 15, 21, 28, 37, 47, 58, 70, 83, 97, 113, 130, 148, 167, 187, 208, 231, 255, 280, 306, 333, 361, 391, 422, 454, 487, 521, 556, 592, 630, 669, 709, 750, 792, 835, 880, 926, 973, 1021, 1070, 1120, 1172, 1225, 1279, 1334, 1390, 1447, 1506, 1566, 1627, 1689]

cp's OEIS Frontend

A025706 Index of 5^n within sequence of numbers of form 4^i*5^j.

Table of values

List of values