A130154 - cp's OEIS frontend

A130154 Triangle read by rows: T(n, k) = 1 + 2(n-k)(k-1) (1 <= k <= n).

n	a(n)
1	1
2	1
3	1
4	1
5	3
6	1
7	1
8	5
9	5
10	1
11	1
12	7
13	9
14	7
15	1
16	1
17	9
18	13
19	13
20	9
21	1
22	1
23	11
24	17
25	19
26	17
27	11
28	1
29	1
30	13
31	21
32	25
33	25
34	21
35	13
36	1
37	1
38	15
39	25
40	31
41	33
42	31
43	25
44	15
45	1
46	1
47	17
48	29
49	37
50	41
51	41
52	37
53	29
54	17
55	1
56	1
57	19
58	33
59	43
60	49
61	51
62	49
63	43
64	33
65	19
66	1
67	1
68	21
69	37
70	49
71	57
72	61
73	61
74	57
75	49
76	37
77	21
78	1

[1, 1, 1, 1, 3, 1, 1, 5, 5, 1, 1, 7, 9, 7, 1, 1, 9, 13, 13, 9, 1, 1, 11, 17, 19, 17, 11, 1, 1, 13, 21, 25, 25, 21, 13, 1, 1, 15, 25, 31, 33, 31, 25, 15, 1, 1, 17, 29, 37, 41, 41, 37, 29, 17, 1, 1, 19, 33, 43, 49, 51, 49, 43, 33, 19, 1, 1, 21, 37, 49, 57, 61, 61, 57, 49, 37, 21, 1]

cp's OEIS Frontend

A130154 Triangle read by rows: T(n, k) = 1 + 2(n-k)(k-1) (1 <= k <= n).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	3
6	1
7	1
8	5
9	5
10	1
11	1
12	7
13	9
14	7
15	1
16	1
17	9
18	13
19	13
20	9
21	1
22	1
23	11
24	17
25	19
26	17
27	11
28	1
29	1
30	13
31	21
32	25
33	25
34	21
35	13
36	1
37	1
38	15
39	25
40	31
41	33
42	31
43	25
44	15
45	1
46	1
47	17
48	29
49	37
50	41
51	41
52	37
53	29
54	17
55	1
56	1
57	19
58	33
59	43
60	49
61	51
62	49
63	43
64	33
65	19
66	1
67	1
68	21
69	37
70	49
71	57
72	61
73	61
74	57
75	49
76	37
77	21
78	1

n	a(n)
1	1
2	1
3	1
4	1
5	3
6	1
7	1
8	5
9	5
10	1
11	1
12	7
13	9
14	7
15	1
16	1
17	9
18	13
19	13
20	9
21	1
22	1
23	11
24	17
25	19
26	17
27	11
28	1
29	1
30	13
31	21
32	25
33	25
34	21
35	13
36	1
37	1
38	15
39	25
40	31
41	33
42	31
43	25
44	15
45	1
46	1
47	17
48	29
49	37
50	41
51	41
52	37
53	29
54	17
55	1
56	1
57	19
58	33
59	43
60	49
61	51
62	49
63	43
64	33
65	19
66	1
67	1
68	21
69	37
70	49
71	57
72	61
73	61
74	57
75	49
76	37
77	21
78	1

cp's OEIS Frontend

A130154 Triangle read by rows: T(n, k) = 1 + 2*(n-k)*(k-1) (1 <= k <= n).

Table of values

List of values

A130154 Triangle read by rows: T(n, k) = 1 + 2(n-k)(k-1) (1 <= k <= n).

n	a(n)
1	1
2	1
3	1
4	1
5	3
6	1
7	1
8	5
9	5
10	1
11	1
12	7
13	9
14	7
15	1
16	1
17	9
18	13
19	13
20	9
21	1
22	1
23	11
24	17
25	19
26	17
27	11
28	1
29	1
30	13
31	21
32	25
33	25
34	21
35	13
36	1
37	1
38	15
39	25
40	31
41	33
42	31
43	25
44	15
45	1
46	1
47	17
48	29
49	37
50	41
51	41
52	37
53	29
54	17
55	1
56	1
57	19
58	33
59	43
60	49
61	51
62	49
63	43
64	33
65	19
66	1
67	1
68	21
69	37
70	49
71	57
72	61
73	61
74	57
75	49
76	37
77	21
78	1