A063628 - cp's OEIS frontend

A063628 Smallest k such that 9^k has exactly n 2's in its decimal representation.

n	a(n)
0	1
1	3
2	15
3	12
4	28
5	26
6	30
7	39
8	70
9	50
10	54
11	82
12	93
13	106
14	105
15	80
16	110
17	121
18	130
19	135
20	156
21	175
22	173
23	183
24	174
25	211
26	194
27	264
28	158
29	216
30	285
31	251
32	306
33	262
34	308
35	298
36	263
37	322
38	346
39	323
40	354
41	276
42	375
43	380
44	419
45	350
46	404
47	432
48	384
49	465
50	403

[1, 3, 15, 12, 28, 26, 30, 39, 70, 50, 54, 82, 93, 106, 105, 80, 110, 121, 130, 135, 156, 175, 173, 183, 174, 211, 194, 264, 158, 216, 285, 251, 306, 262, 308, 298, 263, 322, 346, 323, 354, 276, 375, 380, 419, 350, 404, 432, 384, 465, 403]

cp's OEIS Frontend

A063628 Smallest k such that 9^k has exactly n 2's in its decimal representation.

Table of values

List of values

n	a(n)
0	1
1	3
2	15
3	12
4	28
5	26
6	30
7	39
8	70
9	50
10	54
11	82
12	93
13	106
14	105
15	80
16	110
17	121
18	130
19	135
20	156
21	175
22	173
23	183
24	174
25	211
26	194
27	264
28	158
29	216
30	285
31	251
32	306
33	262
34	308
35	298
36	263
37	322
38	346
39	323
40	354
41	276
42	375
43	380
44	419
45	350
46	404
47	432
48	384
49	465
50	403

n	a(n)
0	1
1	3
2	15
3	12
4	28
5	26
6	30
7	39
8	70
9	50
10	54
11	82
12	93
13	106
14	105
15	80
16	110
17	121
18	130
19	135
20	156
21	175
22	173
23	183
24	174
25	211
26	194
27	264
28	158
29	216
30	285
31	251
32	306
33	262
34	308
35	298
36	263
37	322
38	346
39	323
40	354
41	276
42	375
43	380
44	419
45	350
46	404
47	432
48	384
49	465
50	403

n	a(n)
0	1
1	3
2	15
3	12
4	28
5	26
6	30
7	39
8	70
9	50
10	54
11	82
12	93
13	106
14	105
15	80
16	110
17	121
18	130
19	135
20	156
21	175
22	173
23	183
24	174
25	211
26	194
27	264
28	158
29	216
30	285
31	251
32	306
33	262
34	308
35	298
36	263
37	322
38	346
39	323
40	354
41	276
42	375
43	380
44	419
45	350
46	404
47	432
48	384
49	465
50	403