A031999 - cp's OEIS frontend

A031999 Numbers whose base-4 digits are in nonincreasing order.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	8
7	9
8	10
9	12
10	13
11	14
12	15
13	16
14	20
15	21
16	32
17	36
18	37
19	40
20	41
21	42
22	48
23	52
24	53
25	56
26	57
27	58
28	60
29	61
30	62
31	63
32	64
33	80
34	84
35	85
36	128
37	144
38	148
39	149
40	160
41	164
42	165
43	168
44	169
45	170
46	192
47	208
48	212
49	213
50	224
51	228
52	229
53	232
54	233
55	234
56	240

[1, 2, 3, 4, 5, 8, 9, 10, 12, 13, 14, 15, 16, 20, 21, 32, 36, 37, 40, 41, 42, 48, 52, 53, 56, 57, 58, 60, 61, 62, 63, 64, 80, 84, 85, 128, 144, 148, 149, 160, 164, 165, 168, 169, 170, 192, 208, 212, 213, 224, 228, 229, 232, 233, 234, 240]

cp's OEIS Frontend

A031999 Numbers whose base-4 digits are in nonincreasing order.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	8
7	9
8	10
9	12
10	13
11	14
12	15
13	16
14	20
15	21
16	32
17	36
18	37
19	40
20	41
21	42
22	48
23	52
24	53
25	56
26	57
27	58
28	60
29	61
30	62
31	63
32	64
33	80
34	84
35	85
36	128
37	144
38	148
39	149
40	160
41	164
42	165
43	168
44	169
45	170
46	192
47	208
48	212
49	213
50	224
51	228
52	229
53	232
54	233
55	234
56	240

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	8
7	9
8	10
9	12
10	13
11	14
12	15
13	16
14	20
15	21
16	32
17	36
18	37
19	40
20	41
21	42
22	48
23	52
24	53
25	56
26	57
27	58
28	60
29	61
30	62
31	63
32	64
33	80
34	84
35	85
36	128
37	144
38	148
39	149
40	160
41	164
42	165
43	168
44	169
45	170
46	192
47	208
48	212
49	213
50	224
51	228
52	229
53	232
54	233
55	234
56	240

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	8
7	9
8	10
9	12
10	13
11	14
12	15
13	16
14	20
15	21
16	32
17	36
18	37
19	40
20	41
21	42
22	48
23	52
24	53
25	56
26	57
27	58
28	60
29	61
30	62
31	63
32	64
33	80
34	84
35	85
36	128
37	144
38	148
39	149
40	160
41	164
42	165
43	168
44	169
45	170
46	192
47	208
48	212
49	213
50	224
51	228
52	229
53	232
54	233
55	234
56	240