A028997 - cp's OEIS frontend

A028997 Theta series of quadratic form with Gram matrix [ 4, 1, 0, 1; 1, 4, 1, 0; 0, 1, 4, -1; 1, 0, -1, 4 ].

n	a(n)
0	1
1	0
2	8
3	8
4	16
5	8
6	24
7	0
8	40
9	16
10	40
11	16
12	72
13	24
14	8
15	32
16	80
17	16
18	88
19	24
20	104
21	8
22	80
23	32
24	152
25	48
26	88
27	48
28	16
29	48
30	160
31	48
32	168
33	64
34	128
35	8
36	224
37	48
38	136
39	64
40	232
41	48
42	24
43	48
44	208
45	104
46	160
47	80
48	328
49	0
50	200
51	112
52	248
53	64
54	272
55	96
56	40
57	112
58	192
59	88
60	416
61	72
62	208
63	16
64	336
65	112
66	320

[1, 0, 8, 8, 16, 8, 24, 0, 40, 16, 40, 16, 72, 24, 8, 32, 80, 16, 88, 24, 104, 8, 80, 32, 152, 48, 88, 48, 16, 48, 160, 48, 168, 64, 128, 8, 224, 48, 136, 64, 232, 48, 24, 48, 208, 104, 160, 80, 328, 0, 200, 112, 248, 64, 272, 96, 40, 112, 192, 88, 416, 72, 208, 16, 336, 112, 320]

cp's OEIS Frontend

A028997 Theta series of quadratic form with Gram matrix [ 4, 1, 0, 1; 1, 4, 1, 0; 0, 1, 4, -1; 1, 0, -1, 4 ].

Table of values

List of values

n	a(n)
0	1
1	0
2	8
3	8
4	16
5	8
6	24
7	0
8	40
9	16
10	40
11	16
12	72
13	24
14	8
15	32
16	80
17	16
18	88
19	24
20	104
21	8
22	80
23	32
24	152
25	48
26	88
27	48
28	16
29	48
30	160
31	48
32	168
33	64
34	128
35	8
36	224
37	48
38	136
39	64
40	232
41	48
42	24
43	48
44	208
45	104
46	160
47	80
48	328
49	0
50	200
51	112
52	248
53	64
54	272
55	96
56	40
57	112
58	192
59	88
60	416
61	72
62	208
63	16
64	336
65	112
66	320

n	a(n)
0	1
1	0
2	8
3	8
4	16
5	8
6	24
7	0
8	40
9	16
10	40
11	16
12	72
13	24
14	8
15	32
16	80
17	16
18	88
19	24
20	104
21	8
22	80
23	32
24	152
25	48
26	88
27	48
28	16
29	48
30	160
31	48
32	168
33	64
34	128
35	8
36	224
37	48
38	136
39	64
40	232
41	48
42	24
43	48
44	208
45	104
46	160
47	80
48	328
49	0
50	200
51	112
52	248
53	64
54	272
55	96
56	40
57	112
58	192
59	88
60	416
61	72
62	208
63	16
64	336
65	112
66	320

n	a(n)
0	1
1	0
2	8
3	8
4	16
5	8
6	24
7	0
8	40
9	16
10	40
11	16
12	72
13	24
14	8
15	32
16	80
17	16
18	88
19	24
20	104
21	8
22	80
23	32
24	152
25	48
26	88
27	48
28	16
29	48
30	160
31	48
32	168
33	64
34	128
35	8
36	224
37	48
38	136
39	64
40	232
41	48
42	24
43	48
44	208
45	104
46	160
47	80
48	328
49	0
50	200
51	112
52	248
53	64
54	272
55	96
56	40
57	112
58	192
59	88
60	416
61	72
62	208
63	16
64	336
65	112
66	320