A025722 - cp's OEIS frontend

A025722 Index of 7^n within sequence of numbers of form 4^i*7^j.

n	a(n)
1	1
2	3
3	6
4	11
5	17
6	25
7	34
8	44
9	56
10	69
11	84
12	100
13	117
14	136
15	156
16	178
17	201
18	225
19	251
20	278
21	307
22	337
23	368
24	401
25	435
26	471
27	508
28	546
29	586
30	627
31	670
32	714
33	759
34	806
35	854
36	904
37	955
38	1007
39	1061
40	1116
41	1173
42	1231
43	1290
44	1351
45	1413
46	1477
47	1542
48	1608
49	1676
50	1745
51	1816
52	1888

[1, 3, 6, 11, 17, 25, 34, 44, 56, 69, 84, 100, 117, 136, 156, 178, 201, 225, 251, 278, 307, 337, 368, 401, 435, 471, 508, 546, 586, 627, 670, 714, 759, 806, 854, 904, 955, 1007, 1061, 1116, 1173, 1231, 1290, 1351, 1413, 1477, 1542, 1608, 1676, 1745, 1816, 1888]

cp's OEIS Frontend

A025722 Index of 7^n within sequence of numbers of form 4^i*7^j.

Table of values

List of values