A199639 - cp's OEIS frontend

A199639 Indices of hexagonal numbers that are not the difference of two positive hexagonal numbers.

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	8
8	12
9	16
10	19
11	22
12	24
13	28
14	31
15	32
16	43
17	48
18	64
19	76
20	79
21	96
22	103
23	112
24	128
25	139
26	142
27	163
28	166
29	184
30	192
31	199
32	211
33	223
34	256
35	262
36	268
37	271
38	283
39	304
40	307
41	316
42	331
43	352
44	367
45	376
46	379
47	384
48	412
49	439
50	448
51	454
52	463
53	496
54	499
55	512
56	526
57	547

[1, 2, 3, 4, 6, 7, 8, 12, 16, 19, 22, 24, 28, 31, 32, 43, 48, 64, 76, 79, 96, 103, 112, 128, 139, 142, 163, 166, 184, 192, 199, 211, 223, 256, 262, 268, 271, 283, 304, 307, 316, 331, 352, 367, 376, 379, 384, 412, 439, 448, 454, 463, 496, 499, 512, 526, 547]

cp's OEIS Frontend

A199639 Indices of hexagonal numbers that are not the difference of two positive hexagonal numbers.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	8
8	12
9	16
10	19
11	22
12	24
13	28
14	31
15	32
16	43
17	48
18	64
19	76
20	79
21	96
22	103
23	112
24	128
25	139
26	142
27	163
28	166
29	184
30	192
31	199
32	211
33	223
34	256
35	262
36	268
37	271
38	283
39	304
40	307
41	316
42	331
43	352
44	367
45	376
46	379
47	384
48	412
49	439
50	448
51	454
52	463
53	496
54	499
55	512
56	526
57	547

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	8
8	12
9	16
10	19
11	22
12	24
13	28
14	31
15	32
16	43
17	48
18	64
19	76
20	79
21	96
22	103
23	112
24	128
25	139
26	142
27	163
28	166
29	184
30	192
31	199
32	211
33	223
34	256
35	262
36	268
37	271
38	283
39	304
40	307
41	316
42	331
43	352
44	367
45	376
46	379
47	384
48	412
49	439
50	448
51	454
52	463
53	496
54	499
55	512
56	526
57	547

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	8
8	12
9	16
10	19
11	22
12	24
13	28
14	31
15	32
16	43
17	48
18	64
19	76
20	79
21	96
22	103
23	112
24	128
25	139
26	142
27	163
28	166
29	184
30	192
31	199
32	211
33	223
34	256
35	262
36	268
37	271
38	283
39	304
40	307
41	316
42	331
43	352
44	367
45	376
46	379
47	384
48	412
49	439
50	448
51	454
52	463
53	496
54	499
55	512
56	526
57	547