A281590 - cp's OEIS frontend

A281590 Indices k such that A284896(k-1) and A284896(k) have a different sign.

n	a(n)
1	1
2	4
3	9
4	15
5	20
6	27
7	33
8	41
9	48
10	56
11	64
12	72
13	80
14	89
15	98
16	107
17	116
18	126
19	136
20	146
21	156
22	166
23	176
24	187
25	198
26	208
27	219
28	231
29	242
30	253
31	265
32	276
33	288
34	300
35	312
36	324
37	337
38	349
39	362
40	374
41	387
42	400
43	413
44	426
45	439
46	452
47	465
48	479
49	492
50	506
51	519
52	533
53	547
54	561
55	575

[1, 4, 9, 15, 20, 27, 33, 41, 48, 56, 64, 72, 80, 89, 98, 107, 116, 126, 136, 146, 156, 166, 176, 187, 198, 208, 219, 231, 242, 253, 265, 276, 288, 300, 312, 324, 337, 349, 362, 374, 387, 400, 413, 426, 439, 452, 465, 479, 492, 506, 519, 533, 547, 561, 575]

cp's OEIS Frontend

A281590 Indices k such that A284896(k-1) and A284896(k) have a different sign.

Table of values

List of values

n	a(n)
1	1
2	4
3	9
4	15
5	20
6	27
7	33
8	41
9	48
10	56
11	64
12	72
13	80
14	89
15	98
16	107
17	116
18	126
19	136
20	146
21	156
22	166
23	176
24	187
25	198
26	208
27	219
28	231
29	242
30	253
31	265
32	276
33	288
34	300
35	312
36	324
37	337
38	349
39	362
40	374
41	387
42	400
43	413
44	426
45	439
46	452
47	465
48	479
49	492
50	506
51	519
52	533
53	547
54	561
55	575

n	a(n)
1	1
2	4
3	9
4	15
5	20
6	27
7	33
8	41
9	48
10	56
11	64
12	72
13	80
14	89
15	98
16	107
17	116
18	126
19	136
20	146
21	156
22	166
23	176
24	187
25	198
26	208
27	219
28	231
29	242
30	253
31	265
32	276
33	288
34	300
35	312
36	324
37	337
38	349
39	362
40	374
41	387
42	400
43	413
44	426
45	439
46	452
47	465
48	479
49	492
50	506
51	519
52	533
53	547
54	561
55	575

n	a(n)
1	1
2	4
3	9
4	15
5	20
6	27
7	33
8	41
9	48
10	56
11	64
12	72
13	80
14	89
15	98
16	107
17	116
18	126
19	136
20	146
21	156
22	166
23	176
24	187
25	198
26	208
27	219
28	231
29	242
30	253
31	265
32	276
33	288
34	300
35	312
36	324
37	337
38	349
39	362
40	374
41	387
42	400
43	413
44	426
45	439
46	452
47	465
48	479
49	492
50	506
51	519
52	533
53	547
54	561
55	575