A211415 - cp's OEIS frontend

A211415 Number of ordered triples (w,x,y) with all terms in {-n,...,0,...,n} and w^2 + x*y = 1.

n	a(n)
0	0
1	12
2	20
3	36
4	52
5	68
6	84
7	100
8	132
9	148
10	164
11	180
12	212
13	228
14	244
15	276
16	308
17	324
18	340
19	356
20	388
21	420
22	436
23	452
24	516
25	532
26	548
27	564
28	596
29	612
30	644
31	660
32	692
33	724
34	740
35	772
36	804
37	820
38	836
39	868
40	932
41	948
42	980
43	996
44	1028
45	1060
46	1076
47	1092
48	1156
49	1172

[0, 12, 20, 36, 52, 68, 84, 100, 132, 148, 164, 180, 212, 228, 244, 276, 308, 324, 340, 356, 388, 420, 436, 452, 516, 532, 548, 564, 596, 612, 644, 660, 692, 724, 740, 772, 804, 820, 836, 868, 932, 948, 980, 996, 1028, 1060, 1076, 1092, 1156, 1172]

cp's OEIS Frontend

A211415 Number of ordered triples (w,x,y) with all terms in {-n,...,0,...,n} and w^2 + x*y = 1.

Table of values

List of values