A101858 - cp's OEIS frontend

A101858 Array read by antidiagonals: T(n,k) = Porta-Stolarsky star product T(n,k) = n * k = nk + floor(phi n) floor(phi k) where phi = (1 + sqrt(5))/2.

n	a(n)
1	2
2	5
3	5
4	7
5	13
6	7
7	10
8	18
9	18
10	10
11	13
12	26
13	25
14	26
15	13
16	15
17	34
18	36
19	36
20	34
21	15
22	18
23	39
24	47
25	52
26	47
27	39
28	18
29	20
30	47
31	54
32	68
33	68
34	54
35	47
36	20
37	23
38	52
39	65
40	78
41	89
42	78
43	65
44	52
45	23
46	26
47	60
48	72
49	94
50	102
51	102
52	94
53	72
54	60
55	26
56	28
57	68
58	83
59	104
60	123
61	117
62	123
63	104
64	83
65	68
66	28
67	31
68	73
69	94
70	120

[2, 5, 5, 7, 13, 7, 10, 18, 18, 10, 13, 26, 25, 26, 13, 15, 34, 36, 36, 34, 15, 18, 39, 47, 52, 47, 39, 18, 20, 47, 54, 68, 68, 54, 47, 20, 23, 52, 65, 78, 89, 78, 65, 52, 23, 26, 60, 72, 94, 102, 102, 94, 72, 60, 26, 28, 68, 83, 104, 123, 117, 123, 104, 83, 68, 28, 31, 73, 94, 120]

cp's OEIS Frontend

A101858 Array read by antidiagonals: T(n,k) = Porta-Stolarsky star product T(n,k) = n * k = nk + floor(phi n) floor(phi k) where phi = (1 + sqrt(5))/2.

Table of values

List of values

n	a(n)
1	2
2	5
3	5
4	7
5	13
6	7
7	10
8	18
9	18
10	10
11	13
12	26
13	25
14	26
15	13
16	15
17	34
18	36
19	36
20	34
21	15
22	18
23	39
24	47
25	52
26	47
27	39
28	18
29	20
30	47
31	54
32	68
33	68
34	54
35	47
36	20
37	23
38	52
39	65
40	78
41	89
42	78
43	65
44	52
45	23
46	26
47	60
48	72
49	94
50	102
51	102
52	94
53	72
54	60
55	26
56	28
57	68
58	83
59	104
60	123
61	117
62	123
63	104
64	83
65	68
66	28
67	31
68	73
69	94
70	120

n	a(n)
1	2
2	5
3	5
4	7
5	13
6	7
7	10
8	18
9	18
10	10
11	13
12	26
13	25
14	26
15	13
16	15
17	34
18	36
19	36
20	34
21	15
22	18
23	39
24	47
25	52
26	47
27	39
28	18
29	20
30	47
31	54
32	68
33	68
34	54
35	47
36	20
37	23
38	52
39	65
40	78
41	89
42	78
43	65
44	52
45	23
46	26
47	60
48	72
49	94
50	102
51	102
52	94
53	72
54	60
55	26
56	28
57	68
58	83
59	104
60	123
61	117
62	123
63	104
64	83
65	68
66	28
67	31
68	73
69	94
70	120

n	a(n)
1	2
2	5
3	5
4	7
5	13
6	7
7	10
8	18
9	18
10	10
11	13
12	26
13	25
14	26
15	13
16	15
17	34
18	36
19	36
20	34
21	15
22	18
23	39
24	47
25	52
26	47
27	39
28	18
29	20
30	47
31	54
32	68
33	68
34	54
35	47
36	20
37	23
38	52
39	65
40	78
41	89
42	78
43	65
44	52
45	23
46	26
47	60
48	72
49	94
50	102
51	102
52	94
53	72
54	60
55	26
56	28
57	68
58	83
59	104
60	123
61	117
62	123
63	104
64	83
65	68
66	28
67	31
68	73
69	94
70	120