A331829 - cp's OEIS frontend

A331829 Positive numbers k such that k and k + 1 are both positive negabinary-Niven numbers (A331728) and -k and -(k + 1) are both negative negabinary-Niven numbers (A331819).

n	a(n)
1	2
2	3
3	8
4	15
5	32
6	63
7	128
8	174
9	245
10	255
11	512
12	1023
13	1085
14	1295
15	1505
16	1854
17	1925
18	2048
19	2744
20	3248
21	3303
22	3752
23	4025
24	4095
25	4760
26	4815
27	4865
28	5004
29	5319
30	5768
31	6327
32	6776
33	7104
34	7784
35	7944
36	8154
37	8192
38	8574
39	8792
40	8855
41	9800
42	10254
43	10808
44	11312
45	11816
46	11871

[2, 3, 8, 15, 32, 63, 128, 174, 245, 255, 512, 1023, 1085, 1295, 1505, 1854, 1925, 2048, 2744, 3248, 3303, 3752, 4025, 4095, 4760, 4815, 4865, 5004, 5319, 5768, 6327, 6776, 7104, 7784, 7944, 8154, 8192, 8574, 8792, 8855, 9800, 10254, 10808, 11312, 11816, 11871]

cp's OEIS Frontend

A331829 Positive numbers k such that k and k + 1 are both positive negabinary-Niven numbers (A331728) and -k and -(k + 1) are both negative negabinary-Niven numbers (A331819).

Table of values

List of values