A181862 - cp's OEIS frontend

A181862 Decimal sturdy numbers: positive integers m such that sum of digits of k * m for any positive integer k is at least the sum of digits of m.

n	a(n)
1	1
2	3
3	9
4	10
5	11
6	12
7	18
8	21
9	27
10	30
11	33
12	36
13	41
14	45
15	54
16	63
17	72
18	81
19	90
20	99
21	100
22	101
23	102
24	108
25	110
26	111
27	117
28	120
29	123
30	126
31	132
32	135
33	144
34	153
35	162
36	171
37	180
38	198
39	201
40	207
41	210
42	216
43	225
44	231
45	234
46	243
47	252
48	261
49	270
50	297
51	300
52	303
53	306
54	315
55	324
56	330
57	333
58	342
59	351
60	360
61	396
62	405
63	410

[1, 3, 9, 10, 11, 12, 18, 21, 27, 30, 33, 36, 41, 45, 54, 63, 72, 81, 90, 99, 100, 101, 102, 108, 110, 111, 117, 120, 123, 126, 132, 135, 144, 153, 162, 171, 180, 198, 201, 207, 210, 216, 225, 231, 234, 243, 252, 261, 270, 297, 300, 303, 306, 315, 324, 330, 333, 342, 351, 360, 396, 405, 410]

cp's OEIS Frontend

A181862 Decimal sturdy numbers: positive integers m such that sum of digits of k * m for any positive integer k is at least the sum of digits of m.

Table of values

List of values

n	a(n)
1	1
2	3
3	9
4	10
5	11
6	12
7	18
8	21
9	27
10	30
11	33
12	36
13	41
14	45
15	54
16	63
17	72
18	81
19	90
20	99
21	100
22	101
23	102
24	108
25	110
26	111
27	117
28	120
29	123
30	126
31	132
32	135
33	144
34	153
35	162
36	171
37	180
38	198
39	201
40	207
41	210
42	216
43	225
44	231
45	234
46	243
47	252
48	261
49	270
50	297
51	300
52	303
53	306
54	315
55	324
56	330
57	333
58	342
59	351
60	360
61	396
62	405
63	410

n	a(n)
1	1
2	3
3	9
4	10
5	11
6	12
7	18
8	21
9	27
10	30
11	33
12	36
13	41
14	45
15	54
16	63
17	72
18	81
19	90
20	99
21	100
22	101
23	102
24	108
25	110
26	111
27	117
28	120
29	123
30	126
31	132
32	135
33	144
34	153
35	162
36	171
37	180
38	198
39	201
40	207
41	210
42	216
43	225
44	231
45	234
46	243
47	252
48	261
49	270
50	297
51	300
52	303
53	306
54	315
55	324
56	330
57	333
58	342
59	351
60	360
61	396
62	405
63	410

n	a(n)
1	1
2	3
3	9
4	10
5	11
6	12
7	18
8	21
9	27
10	30
11	33
12	36
13	41
14	45
15	54
16	63
17	72
18	81
19	90
20	99
21	100
22	101
23	102
24	108
25	110
26	111
27	117
28	120
29	123
30	126
31	132
32	135
33	144
34	153
35	162
36	171
37	180
38	198
39	201
40	207
41	210
42	216
43	225
44	231
45	234
46	243
47	252
48	261
49	270
50	297
51	300
52	303
53	306
54	315
55	324
56	330
57	333
58	342
59	351
60	360
61	396
62	405
63	410