A303393 - cp's OEIS frontend

A303393 Numbers of the form x*(x+1)/2 + 5^y with x and y nonnegative integers.

n	a(n)
1	1
2	2
3	4
4	5
5	6
6	7
7	8
8	11
9	15
10	16
11	20
12	22
13	25
14	26
15	28
16	29
17	31
18	33
19	35
20	37
21	40
22	41
23	46
24	50
25	53
26	56
27	60
28	61
29	67
30	70
31	71
32	79
33	80
34	83
35	91
36	92
37	96
38	103
39	106
40	110
41	116
42	121
43	125
44	126
45	128
46	130
47	131
48	135
49	137
50	140
51	141
52	145
53	146
54	153
55	154
56	158
57	161
58	170
59	172
60	176

[1, 2, 4, 5, 6, 7, 8, 11, 15, 16, 20, 22, 25, 26, 28, 29, 31, 33, 35, 37, 40, 41, 46, 50, 53, 56, 60, 61, 67, 70, 71, 79, 80, 83, 91, 92, 96, 103, 106, 110, 116, 121, 125, 126, 128, 130, 131, 135, 137, 140, 141, 145, 146, 153, 154, 158, 161, 170, 172, 176]

cp's OEIS Frontend

A303393 Numbers of the form x*(x+1)/2 + 5^y with x and y nonnegative integers.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	5
5	6
6	7
7	8
8	11
9	15
10	16
11	20
12	22
13	25
14	26
15	28
16	29
17	31
18	33
19	35
20	37
21	40
22	41
23	46
24	50
25	53
26	56
27	60
28	61
29	67
30	70
31	71
32	79
33	80
34	83
35	91
36	92
37	96
38	103
39	106
40	110
41	116
42	121
43	125
44	126
45	128
46	130
47	131
48	135
49	137
50	140
51	141
52	145
53	146
54	153
55	154
56	158
57	161
58	170
59	172
60	176

n	a(n)
1	1
2	2
3	4
4	5
5	6
6	7
7	8
8	11
9	15
10	16
11	20
12	22
13	25
14	26
15	28
16	29
17	31
18	33
19	35
20	37
21	40
22	41
23	46
24	50
25	53
26	56
27	60
28	61
29	67
30	70
31	71
32	79
33	80
34	83
35	91
36	92
37	96
38	103
39	106
40	110
41	116
42	121
43	125
44	126
45	128
46	130
47	131
48	135
49	137
50	140
51	141
52	145
53	146
54	153
55	154
56	158
57	161
58	170
59	172
60	176

n	a(n)
1	1
2	2
3	4
4	5
5	6
6	7
7	8
8	11
9	15
10	16
11	20
12	22
13	25
14	26
15	28
16	29
17	31
18	33
19	35
20	37
21	40
22	41
23	46
24	50
25	53
26	56
27	60
28	61
29	67
30	70
31	71
32	79
33	80
34	83
35	91
36	92
37	96
38	103
39	106
40	110
41	116
42	121
43	125
44	126
45	128
46	130
47	131
48	135
49	137
50	140
51	141
52	145
53	146
54	153
55	154
56	158
57	161
58	170
59	172
60	176