A080851 - cp's OEIS frontend

A080851 Square array of pyramidal numbers, read by antidiagonals.

n	a(n)
0	1
1	1
2	3
3	1
4	4
5	6
6	1
7	5
8	10
9	10
10	1
11	6
12	14
13	20
14	15
15	1
16	7
17	18
18	30
19	35
20	21
21	1
22	8
23	22
24	40
25	55
26	56
27	28
28	1
29	9
30	26
31	50
32	75
33	91
34	84
35	36
36	1
37	10
38	30
39	60
40	95
41	126
42	140
43	120
44	45
45	1
46	11
47	34
48	70
49	115
50	161
51	196
52	204
53	165
54	55
55	1
56	12
57	38
58	80
59	135
60	196
61	252
62	288
63	285
64	220
65	66
66	1
67	13
68	42
69	90
70	155
71	231
72	308
73	372
74	405
75	385
76	286
77	78

[1, 1, 3, 1, 4, 6, 1, 5, 10, 10, 1, 6, 14, 20, 15, 1, 7, 18, 30, 35, 21, 1, 8, 22, 40, 55, 56, 28, 1, 9, 26, 50, 75, 91, 84, 36, 1, 10, 30, 60, 95, 126, 140, 120, 45, 1, 11, 34, 70, 115, 161, 196, 204, 165, 55, 1, 12, 38, 80, 135, 196, 252, 288, 285, 220, 66, 1, 13, 42, 90, 155, 231, 308, 372, 405, 385, 286, 78]

cp's OEIS Frontend

A080851 Square array of pyramidal numbers, read by antidiagonals.

Table of values

List of values

n	a(n)
0	1
1	1
2	3
3	1
4	4
5	6
6	1
7	5
8	10
9	10
10	1
11	6
12	14
13	20
14	15
15	1
16	7
17	18
18	30
19	35
20	21
21	1
22	8
23	22
24	40
25	55
26	56
27	28
28	1
29	9
30	26
31	50
32	75
33	91
34	84
35	36
36	1
37	10
38	30
39	60
40	95
41	126
42	140
43	120
44	45
45	1
46	11
47	34
48	70
49	115
50	161
51	196
52	204
53	165
54	55
55	1
56	12
57	38
58	80
59	135
60	196
61	252
62	288
63	285
64	220
65	66
66	1
67	13
68	42
69	90
70	155
71	231
72	308
73	372
74	405
75	385
76	286
77	78

n	a(n)
0	1
1	1
2	3
3	1
4	4
5	6
6	1
7	5
8	10
9	10
10	1
11	6
12	14
13	20
14	15
15	1
16	7
17	18
18	30
19	35
20	21
21	1
22	8
23	22
24	40
25	55
26	56
27	28
28	1
29	9
30	26
31	50
32	75
33	91
34	84
35	36
36	1
37	10
38	30
39	60
40	95
41	126
42	140
43	120
44	45
45	1
46	11
47	34
48	70
49	115
50	161
51	196
52	204
53	165
54	55
55	1
56	12
57	38
58	80
59	135
60	196
61	252
62	288
63	285
64	220
65	66
66	1
67	13
68	42
69	90
70	155
71	231
72	308
73	372
74	405
75	385
76	286
77	78

n	a(n)
0	1
1	1
2	3
3	1
4	4
5	6
6	1
7	5
8	10
9	10
10	1
11	6
12	14
13	20
14	15
15	1
16	7
17	18
18	30
19	35
20	21
21	1
22	8
23	22
24	40
25	55
26	56
27	28
28	1
29	9
30	26
31	50
32	75
33	91
34	84
35	36
36	1
37	10
38	30
39	60
40	95
41	126
42	140
43	120
44	45
45	1
46	11
47	34
48	70
49	115
50	161
51	196
52	204
53	165
54	55
55	1
56	12
57	38
58	80
59	135
60	196
61	252
62	288
63	285
64	220
65	66
66	1
67	13
68	42
69	90
70	155
71	231
72	308
73	372
74	405
75	385
76	286
77	78