A024996 - cp's OEIS frontend

A024996 Triangular array, read by rows: second differences in n,n direction of trinomial array A027907.

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	0
6	2
7	0
8	1
9	1
10	1
11	3
12	2
13	3
14	1
15	1
16	1
17	2
18	5
19	6
20	8
21	6
22	5
23	2
24	1
25	1
26	3
27	8
28	13
29	19
30	20
31	19
32	13
33	8
34	3
35	1
36	1
37	4
38	12
39	24
40	40
41	52
42	58
43	52
44	40
45	24
46	12
47	4
48	1
49	1
50	5
51	17
52	40
53	76
54	116
55	150
56	162
57	150
58	116
59	76
60	40
61	17
62	5
63	1
64	1
65	6
66	23
67	62
68	133
69	232
70	342
71	428
72	462
73	428
74	342
75	232
76	133
77	62
78	23
79	6

[1, 1, 0, 1, 1, 0, 2, 0, 1, 1, 1, 3, 2, 3, 1, 1, 1, 2, 5, 6, 8, 6, 5, 2, 1, 1, 3, 8, 13, 19, 20, 19, 13, 8, 3, 1, 1, 4, 12, 24, 40, 52, 58, 52, 40, 24, 12, 4, 1, 1, 5, 17, 40, 76, 116, 150, 162, 150, 116, 76, 40, 17, 5, 1, 1, 6, 23, 62, 133, 232, 342, 428, 462, 428, 342, 232, 133, 62, 23, 6]

cp's OEIS Frontend

A024996 Triangular array, read by rows: second differences in n,n direction of trinomial array A027907.

Table of values

List of values

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	0
6	2
7	0
8	1
9	1
10	1
11	3
12	2
13	3
14	1
15	1
16	1
17	2
18	5
19	6
20	8
21	6
22	5
23	2
24	1
25	1
26	3
27	8
28	13
29	19
30	20
31	19
32	13
33	8
34	3
35	1
36	1
37	4
38	12
39	24
40	40
41	52
42	58
43	52
44	40
45	24
46	12
47	4
48	1
49	1
50	5
51	17
52	40
53	76
54	116
55	150
56	162
57	150
58	116
59	76
60	40
61	17
62	5
63	1
64	1
65	6
66	23
67	62
68	133
69	232
70	342
71	428
72	462
73	428
74	342
75	232
76	133
77	62
78	23
79	6

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	0
6	2
7	0
8	1
9	1
10	1
11	3
12	2
13	3
14	1
15	1
16	1
17	2
18	5
19	6
20	8
21	6
22	5
23	2
24	1
25	1
26	3
27	8
28	13
29	19
30	20
31	19
32	13
33	8
34	3
35	1
36	1
37	4
38	12
39	24
40	40
41	52
42	58
43	52
44	40
45	24
46	12
47	4
48	1
49	1
50	5
51	17
52	40
53	76
54	116
55	150
56	162
57	150
58	116
59	76
60	40
61	17
62	5
63	1
64	1
65	6
66	23
67	62
68	133
69	232
70	342
71	428
72	462
73	428
74	342
75	232
76	133
77	62
78	23
79	6

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	0
6	2
7	0
8	1
9	1
10	1
11	3
12	2
13	3
14	1
15	1
16	1
17	2
18	5
19	6
20	8
21	6
22	5
23	2
24	1
25	1
26	3
27	8
28	13
29	19
30	20
31	19
32	13
33	8
34	3
35	1
36	1
37	4
38	12
39	24
40	40
41	52
42	58
43	52
44	40
45	24
46	12
47	4
48	1
49	1
50	5
51	17
52	40
53	76
54	116
55	150
56	162
57	150
58	116
59	76
60	40
61	17
62	5
63	1
64	1
65	6
66	23
67	62
68	133
69	232
70	342
71	428
72	462
73	428
74	342
75	232
76	133
77	62
78	23
79	6