A221643 - cp's OEIS frontend

A221643 Numbers k such that k^2 XOR (k+1)^2 is a square, where XOR is the bitwise XOR operator.

n	a(n)
1	0
2	3
3	4
4	23
5	24
6	43
7	44
8	76
9	111
10	112
11	115
12	139
13	164
14	180
15	183
16	248
17	264
18	323
19	327
20	348
21	411
22	479
23	480
24	499
25	611
26	699
27	747
28	787
29	943
30	976
31	1072
32	1103
33	1111
34	1176
35	1268
36	1388
37	1447
38	1576
39	1684
40	1851
41	1983
42	1984
43	2008
44	2243
45	2692
46	3271
47	3383
48	3452
49	3464
50	3532
51	3679
52	3804
53	3867

[0, 3, 4, 23, 24, 43, 44, 76, 111, 112, 115, 139, 164, 180, 183, 248, 264, 323, 327, 348, 411, 479, 480, 499, 611, 699, 747, 787, 943, 976, 1072, 1103, 1111, 1176, 1268, 1388, 1447, 1576, 1684, 1851, 1983, 1984, 2008, 2243, 2692, 3271, 3383, 3452, 3464, 3532, 3679, 3804, 3867]

cp's OEIS Frontend

A221643 Numbers k such that k^2 XOR (k+1)^2 is a square, where XOR is the bitwise XOR operator.

Table of values

List of values