A212893 - cp's OEIS frontend

A212893 Number of quadruples (w,x,y,z) with all terms in {0,...,n} such that w-x, x-y, and y-z all have the same parity.

n	a(n)
0	1
1	4
2	25
3	64
4	169
5	324
6	625
7	1024
8	1681
9	2500
10	3721
11	5184
12	7225
13	9604
14	12769
15	16384
16	21025
17	26244
18	32761
19	40000
20	48841
21	58564
22	70225
23	82944
24	97969
25	114244
26	133225
27	153664
28	177241
29	202500
30	231361
31	262144
32	297025
33	334084
34	375769

[1, 4, 25, 64, 169, 324, 625, 1024, 1681, 2500, 3721, 5184, 7225, 9604, 12769, 16384, 21025, 26244, 32761, 40000, 48841, 58564, 70225, 82944, 97969, 114244, 133225, 153664, 177241, 202500, 231361, 262144, 297025, 334084, 375769]

cp's OEIS Frontend

A212893 Number of quadruples (w,x,y,z) with all terms in {0,...,n} such that w-x, x-y, and y-z all have the same parity.

Table of values

List of values