A103217 - cp's OEIS frontend

A103217 Hexagonal numbers triangle read by rows: T(n,k)=(n+1-k)(2(n+1-k)-1).

n	a(n)
0	1
1	6
2	1
3	15
4	6
5	1
6	28
7	15
8	6
9	1
10	45
11	28
12	15
13	6
14	1
15	66
16	45
17	28
18	15
19	6
20	1
21	91
22	66
23	45
24	28
25	15
26	6
27	1
28	120
29	91
30	66
31	45
32	28
33	15
34	6
35	1
36	153
37	120
38	91
39	66
40	45
41	28
42	15
43	6
44	1
45	190
46	153
47	120
48	91
49	66
50	45
51	28
52	15
53	6
54	1
55	231
56	190
57	153
58	120
59	91
60	66
61	45
62	28
63	15
64	6
65	1
66	276
67	231
68	190
69	153
70	120
71	91
72	66

[1, 6, 1, 15, 6, 1, 28, 15, 6, 1, 45, 28, 15, 6, 1, 66, 45, 28, 15, 6, 1, 91, 66, 45, 28, 15, 6, 1, 120, 91, 66, 45, 28, 15, 6, 1, 153, 120, 91, 66, 45, 28, 15, 6, 1, 190, 153, 120, 91, 66, 45, 28, 15, 6, 1, 231, 190, 153, 120, 91, 66, 45, 28, 15, 6, 1, 276, 231, 190, 153, 120, 91, 66]

cp's OEIS Frontend

A103217 Hexagonal numbers triangle read by rows: T(n,k)=(n+1-k)(2(n+1-k)-1).

Table of values

List of values

n	a(n)
0	1
1	6
2	1
3	15
4	6
5	1
6	28
7	15
8	6
9	1
10	45
11	28
12	15
13	6
14	1
15	66
16	45
17	28
18	15
19	6
20	1
21	91
22	66
23	45
24	28
25	15
26	6
27	1
28	120
29	91
30	66
31	45
32	28
33	15
34	6
35	1
36	153
37	120
38	91
39	66
40	45
41	28
42	15
43	6
44	1
45	190
46	153
47	120
48	91
49	66
50	45
51	28
52	15
53	6
54	1
55	231
56	190
57	153
58	120
59	91
60	66
61	45
62	28
63	15
64	6
65	1
66	276
67	231
68	190
69	153
70	120
71	91
72	66

n	a(n)
0	1
1	6
2	1
3	15
4	6
5	1
6	28
7	15
8	6
9	1
10	45
11	28
12	15
13	6
14	1
15	66
16	45
17	28
18	15
19	6
20	1
21	91
22	66
23	45
24	28
25	15
26	6
27	1
28	120
29	91
30	66
31	45
32	28
33	15
34	6
35	1
36	153
37	120
38	91
39	66
40	45
41	28
42	15
43	6
44	1
45	190
46	153
47	120
48	91
49	66
50	45
51	28
52	15
53	6
54	1
55	231
56	190
57	153
58	120
59	91
60	66
61	45
62	28
63	15
64	6
65	1
66	276
67	231
68	190
69	153
70	120
71	91
72	66

cp's OEIS Frontend

A103217 Hexagonal numbers triangle read by rows: T(n,k)=(n+1-k)*(2*(n+1-k)-1).

Table of values

List of values

A103217 Hexagonal numbers triangle read by rows: T(n,k)=(n+1-k)(2(n+1-k)-1).

n	a(n)
0	1
1	6
2	1
3	15
4	6
5	1
6	28
7	15
8	6
9	1
10	45
11	28
12	15
13	6
14	1
15	66
16	45
17	28
18	15
19	6
20	1
21	91
22	66
23	45
24	28
25	15
26	6
27	1
28	120
29	91
30	66
31	45
32	28
33	15
34	6
35	1
36	153
37	120
38	91
39	66
40	45
41	28
42	15
43	6
44	1
45	190
46	153
47	120
48	91
49	66
50	45
51	28
52	15
53	6
54	1
55	231
56	190
57	153
58	120
59	91
60	66
61	45
62	28
63	15
64	6
65	1
66	276
67	231
68	190
69	153
70	120
71	91
72	66