A356592 - cp's OEIS frontend

A356592 Array A(n, k), n, k >= 0, read by antidiagonals; A(n, k) = Sum_{i, j >= 3} t_i * u_j * T(i+j) where Sum_{i >= 3} t_i * T(i) and Sum_{j >= 3} u_j * T(j) are the greedy tribonacci representations of n and k, respectively, and T = A000073.

n	a(n)
0	0
1	0
2	0
3	0
4	7
5	0
6	0
7	13
8	13
9	0
10	0
11	20
12	24
13	20
14	0
15	0
16	24
17	37
18	37
19	24
20	0
21	0
22	31
23	44
24	57
25	44
26	31
27	0
28	0
29	37
30	57
31	68
32	68
33	57
34	37
35	0
36	0
37	44
38	68
39	88
40	81
41	88
42	68
43	44
44	0
45	0
46	51
47	81
48	105
49	105
50	105
51	105
52	81
53	51
54	0
55	0
56	57
57	94
58	125
59	125
60	136
61	125
62	125
63	94
64	57
65	0

[0, 0, 0, 0, 7, 0, 0, 13, 13, 0, 0, 20, 24, 20, 0, 0, 24, 37, 37, 24, 0, 0, 31, 44, 57, 44, 31, 0, 0, 37, 57, 68, 68, 57, 37, 0, 0, 44, 68, 88, 81, 88, 68, 44, 0, 0, 51, 81, 105, 105, 105, 105, 81, 51, 0, 0, 57, 94, 125, 125, 136, 125, 125, 94, 57, 0]

cp's OEIS Frontend

A356592 Array A(n, k), n, k >= 0, read by antidiagonals; A(n, k) = Sum_{i, j >= 3} t_i * u_j * T(i+j) where Sum_{i >= 3} t_i * T(i) and Sum_{j >= 3} u_j * T(j) are the greedy tribonacci representations of n and k, respectively, and T = A000073.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	0
4	7
5	0
6	0
7	13
8	13
9	0
10	0
11	20
12	24
13	20
14	0
15	0
16	24
17	37
18	37
19	24
20	0
21	0
22	31
23	44
24	57
25	44
26	31
27	0
28	0
29	37
30	57
31	68
32	68
33	57
34	37
35	0
36	0
37	44
38	68
39	88
40	81
41	88
42	68
43	44
44	0
45	0
46	51
47	81
48	105
49	105
50	105
51	105
52	81
53	51
54	0
55	0
56	57
57	94
58	125
59	125
60	136
61	125
62	125
63	94
64	57
65	0

n	a(n)
0	0
1	0
2	0
3	0
4	7
5	0
6	0
7	13
8	13
9	0
10	0
11	20
12	24
13	20
14	0
15	0
16	24
17	37
18	37
19	24
20	0
21	0
22	31
23	44
24	57
25	44
26	31
27	0
28	0
29	37
30	57
31	68
32	68
33	57
34	37
35	0
36	0
37	44
38	68
39	88
40	81
41	88
42	68
43	44
44	0
45	0
46	51
47	81
48	105
49	105
50	105
51	105
52	81
53	51
54	0
55	0
56	57
57	94
58	125
59	125
60	136
61	125
62	125
63	94
64	57
65	0

n	a(n)
0	0
1	0
2	0
3	0
4	7
5	0
6	0
7	13
8	13
9	0
10	0
11	20
12	24
13	20
14	0
15	0
16	24
17	37
18	37
19	24
20	0
21	0
22	31
23	44
24	57
25	44
26	31
27	0
28	0
29	37
30	57
31	68
32	68
33	57
34	37
35	0
36	0
37	44
38	68
39	88
40	81
41	88
42	68
43	44
44	0
45	0
46	51
47	81
48	105
49	105
50	105
51	105
52	81
53	51
54	0
55	0
56	57
57	94
58	125
59	125
60	136
61	125
62	125
63	94
64	57
65	0