A180590 - cp's OEIS frontend

A180590 Numbers k such that k! is the sum of two triangular numbers.

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	7
8	8
9	9
10	10
11	13
12	15
13	16
14	17
15	21
16	24
17	27
18	28
19	29
20	32
21	33
22	34
23	42
24	49
25	54
26	59
27	66
28	68
29	72
30	79
31	80
32	81
33	85
34	86
35	95
36	96
37	99
38	102
39	109
40	118

[0, 1, 2, 3, 4, 5, 7, 8, 9, 10, 13, 15, 16, 17, 21, 24, 27, 28, 29, 32, 33, 34, 42, 49, 54, 59, 66, 68, 72, 79, 80, 81, 85, 86, 95, 96, 99, 102, 109, 118]

cp's OEIS Frontend

A180590 Numbers k such that k! is the sum of two triangular numbers.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	7
8	8
9	9
10	10
11	13
12	15
13	16
14	17
15	21
16	24
17	27
18	28
19	29
20	32
21	33
22	34
23	42
24	49
25	54
26	59
27	66
28	68
29	72
30	79
31	80
32	81
33	85
34	86
35	95
36	96
37	99
38	102
39	109
40	118

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	7
8	8
9	9
10	10
11	13
12	15
13	16
14	17
15	21
16	24
17	27
18	28
19	29
20	32
21	33
22	34
23	42
24	49
25	54
26	59
27	66
28	68
29	72
30	79
31	80
32	81
33	85
34	86
35	95
36	96
37	99
38	102
39	109
40	118

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	7
8	8
9	9
10	10
11	13
12	15
13	16
14	17
15	21
16	24
17	27
18	28
19	29
20	32
21	33
22	34
23	42
24	49
25	54
26	59
27	66
28	68
29	72
30	79
31	80
32	81
33	85
34	86
35	95
36	96
37	99
38	102
39	109
40	118