A025724 - cp's OEIS frontend

A025724 Index of 7^n within sequence of numbers of form 6^i*7^j.

n	a(n)
1	1
2	3
3	6
4	10
5	15
6	21
7	28
8	36
9	45
10	55
11	66
12	78
13	92
14	107
15	123
16	140
17	158
18	177
19	197
20	218
21	240
22	263
23	287
24	312
25	339
26	367
27	396
28	426
29	457
30	489
31	522
32	556
33	591
34	627
35	664
36	703
37	743
38	784
39	826
40	869
41	913
42	958
43	1004
44	1051
45	1099
46	1148
47	1198
48	1250
49	1303
50	1357
51	1412
52	1468
53	1525
54	1583

[1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 92, 107, 123, 140, 158, 177, 197, 218, 240, 263, 287, 312, 339, 367, 396, 426, 457, 489, 522, 556, 591, 627, 664, 703, 743, 784, 826, 869, 913, 958, 1004, 1051, 1099, 1148, 1198, 1250, 1303, 1357, 1412, 1468, 1525, 1583]

cp's OEIS Frontend

A025724 Index of 7^n within sequence of numbers of form 6^i*7^j.

Table of values

List of values