A215009 - cp's OEIS frontend

A215009 Numbers which are "easy" to key on a computer numpad.

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	12
13	14
14	20
15	21
16	23
17	25
18	32
19	36
20	41
21	45
22	47
23	52
24	54
25	56
26	58
27	63
28	65
29	69
30	74
31	78
32	85
33	87
34	89
35	96
36	98
37	101
38	120
39	121
40	123
41	125
42	141
43	145
44	147
45	202
46	210
47	212
48	214
49	232
50	236
51	252
52	254
53	256
54	258
55	320
56	321
57	323
58	325
59	363
60	365
61	369
62	410

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 20, 21, 23, 25, 32, 36, 41, 45, 47, 52, 54, 56, 58, 63, 65, 69, 74, 78, 85, 87, 89, 96, 98, 101, 120, 121, 123, 125, 141, 145, 147, 202, 210, 212, 214, 232, 236, 252, 254, 256, 258, 320, 321, 323, 325, 363, 365, 369, 410]

cp's OEIS Frontend

A215009 Numbers which are "easy" to key on a computer numpad.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	12
13	14
14	20
15	21
16	23
17	25
18	32
19	36
20	41
21	45
22	47
23	52
24	54
25	56
26	58
27	63
28	65
29	69
30	74
31	78
32	85
33	87
34	89
35	96
36	98
37	101
38	120
39	121
40	123
41	125
42	141
43	145
44	147
45	202
46	210
47	212
48	214
49	232
50	236
51	252
52	254
53	256
54	258
55	320
56	321
57	323
58	325
59	363
60	365
61	369
62	410

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	12
13	14
14	20
15	21
16	23
17	25
18	32
19	36
20	41
21	45
22	47
23	52
24	54
25	56
26	58
27	63
28	65
29	69
30	74
31	78
32	85
33	87
34	89
35	96
36	98
37	101
38	120
39	121
40	123
41	125
42	141
43	145
44	147
45	202
46	210
47	212
48	214
49	232
50	236
51	252
52	254
53	256
54	258
55	320
56	321
57	323
58	325
59	363
60	365
61	369
62	410

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	12
13	14
14	20
15	21
16	23
17	25
18	32
19	36
20	41
21	45
22	47
23	52
24	54
25	56
26	58
27	63
28	65
29	69
30	74
31	78
32	85
33	87
34	89
35	96
36	98
37	101
38	120
39	121
40	123
41	125
42	141
43	145
44	147
45	202
46	210
47	212
48	214
49	232
50	236
51	252
52	254
53	256
54	258
55	320
56	321
57	323
58	325
59	363
60	365
61	369
62	410