A026552 - cp's OEIS frontend

A026552 Irregular triangular array T read by rows: T(n, 0) = T(n, 2n) = 1, T(n, 1) = T(n, 2n-1) = floor(n/2 + 1), for even n >= 2, T(n, k) = T(n-1, k-2) + T(n-1, k-1) + T(n-1, k), otherwise T(n, k) = T(n-1, k-2) + T(n-1, k).

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	3
7	2
8	1
9	1
10	2
11	4
12	4
13	4
14	2
15	1
16	1
17	3
18	7
19	10
20	12
21	10
22	7
23	3
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	4
51	13
52	28
53	52
54	76
55	98
56	104
57	98
58	76
59	52
60	28
61	13
62	4
63	1
64	1
65	5
66	18
67	45
68	93
69	156
70	226
71	278

[1, 1, 1, 1, 1, 2, 3, 2, 1, 1, 2, 4, 4, 4, 2, 1, 1, 3, 7, 10, 12, 10, 7, 3, 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, 4, 13, 28, 52, 76, 98, 104, 98, 76, 52, 28, 13, 4, 1, 1, 5, 18, 45, 93, 156, 226, 278]

cp's OEIS Frontend

A026552 Irregular triangular array T read by rows: T(n, 0) = T(n, 2n) = 1, T(n, 1) = T(n, 2n-1) = floor(n/2 + 1), for even n >= 2, T(n, k) = T(n-1, k-2) + T(n-1, k-1) + T(n-1, k), otherwise T(n, k) = T(n-1, k-2) + T(n-1, k).

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	3
7	2
8	1
9	1
10	2
11	4
12	4
13	4
14	2
15	1
16	1
17	3
18	7
19	10
20	12
21	10
22	7
23	3
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	4
51	13
52	28
53	52
54	76
55	98
56	104
57	98
58	76
59	52
60	28
61	13
62	4
63	1
64	1
65	5
66	18
67	45
68	93
69	156
70	226
71	278

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	3
7	2
8	1
9	1
10	2
11	4
12	4
13	4
14	2
15	1
16	1
17	3
18	7
19	10
20	12
21	10
22	7
23	3
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	4
51	13
52	28
53	52
54	76
55	98
56	104
57	98
58	76
59	52
60	28
61	13
62	4
63	1
64	1
65	5
66	18
67	45
68	93
69	156
70	226
71	278

cp's OEIS Frontend

A026552 Irregular triangular array T read by rows: T(n, 0) = T(n, 2*n) = 1, T(n, 1) = T(n, 2*n-1) = floor(n/2 + 1), for even n >= 2, T(n, k) = T(n-1, k-2) + T(n-1, k-1) + T(n-1, k), otherwise T(n, k) = T(n-1, k-2) + T(n-1, k).

Table of values

List of values

A026552 Irregular triangular array T read by rows: T(n, 0) = T(n, 2n) = 1, T(n, 1) = T(n, 2n-1) = floor(n/2 + 1), for even n >= 2, T(n, k) = T(n-1, k-2) + T(n-1, k-1) + T(n-1, k), otherwise T(n, k) = T(n-1, k-2) + T(n-1, k).

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	3
7	2
8	1
9	1
10	2
11	4
12	4
13	4
14	2
15	1
16	1
17	3
18	7
19	10
20	12
21	10
22	7
23	3
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	4
51	13
52	28
53	52
54	76
55	98
56	104
57	98
58	76
59	52
60	28
61	13
62	4
63	1
64	1
65	5
66	18
67	45
68	93
69	156
70	226
71	278