A057769 - cp's OEIS frontend

A057769 a(n) = 4n^4 + 8n^3 - 4n - 1 = (2n^2 - 1)(2n^2 + 4*n + 1).

n	a(n)
0	-1
1	7
2	119
3	527
4	1519
5	3479
6	6887
7	12319
8	20447
9	32039
10	47959
11	69167
12	96719
13	131767
14	175559
15	229439
16	294847
17	373319
18	466487
19	576079
20	703919
21	851927
22	1022119
23	1216607
24	1437599
25	1687399
26	1968407
27	2283119
28	2634127
29	3024119
30	3455879
31	3932287
32	4456319
33	5031047
34	5659639
35	6345359
36	7091567

[-1, 7, 119, 527, 1519, 3479, 6887, 12319, 20447, 32039, 47959, 69167, 96719, 131767, 175559, 229439, 294847, 373319, 466487, 576079, 703919, 851927, 1022119, 1216607, 1437599, 1687399, 1968407, 2283119, 2634127, 3024119, 3455879, 3932287, 4456319, 5031047, 5659639, 6345359, 7091567]

cp's OEIS Frontend

A057769 a(n) = 4n^4 + 8n^3 - 4n - 1 = (2n^2 - 1)(2n^2 + 4*n + 1).

Table of values

List of values

cp's OEIS Frontend

A057769 a(n) = 4*n^4 + 8*n^3 - 4*n - 1 = (2*n^2 - 1)*(2*n^2 + 4*n + 1).

Table of values

List of values

A057769 a(n) = 4n^4 + 8n^3 - 4n - 1 = (2n^2 - 1)(2n^2 + 4*n + 1).