A125250 - cp's OEIS frontend

A125250 Square array, read by antidiagonals, where A(1,1) = A(2,2) = 1, A(1,2) = A(2,1) = 0, A(n,k) = 0 if n < 1 or k < 1, otherwise A(n,k) = A(n-2,k-2) + A(n-1,k-2) + A(n-2,k-1) + A(n-1,k-1).

n	a(n)
1	1
2	0
3	0
4	0
5	1
6	0
7	0
8	1
9	1
10	0
11	0
12	0
13	2
14	0
15	0
16	0
17	0
18	2
19	2
20	0
21	0
22	0
23	0
24	1
25	5
26	1
27	0
28	0
29	0
30	0
31	0
32	5
33	5
34	0
35	0
36	0
37	0
38	0
39	0
40	3
41	11
42	3
43	0
44	0
45	0
46	0
47	0
48	0
49	1
50	13
51	13
52	1
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	9
61	26
62	9
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	4
72	32
73	32
74	4
75	0
76	0
77	0
78	0
79	0
80	0
81	0
82	0
83	1
84	26
85	63
86	26
87	1
88	0
89	0
90	0
91	0
92	0
93	0
94	0
95	0
96	0
97	14
98	80
99	80
100	14
101	0
102	0
103	0
104	0
105	0

[1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 2, 0, 0, 0, 0, 2, 2, 0, 0, 0, 0, 1, 5, 1, 0, 0, 0, 0, 0, 5, 5, 0, 0, 0, 0, 0, 0, 3, 11, 3, 0, 0, 0, 0, 0, 0, 1, 13, 13, 1, 0, 0, 0, 0, 0, 0, 0, 9, 26, 9, 0, 0, 0, 0, 0, 0, 0, 0, 4, 32, 32, 4, 0, 0, 0, 0, 0, 0, 0, 0, 1, 26, 63, 26, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 80, 80, 14, 0, 0, 0, 0, 0]

cp's OEIS Frontend

A125250 Square array, read by antidiagonals, where A(1,1) = A(2,2) = 1, A(1,2) = A(2,1) = 0, A(n,k) = 0 if n < 1 or k < 1, otherwise A(n,k) = A(n-2,k-2) + A(n-1,k-2) + A(n-2,k-1) + A(n-1,k-1).

Table of values

List of values

n	a(n)
1	1
2	0
3	0
4	0
5	1
6	0
7	0
8	1
9	1
10	0
11	0
12	0
13	2
14	0
15	0
16	0
17	0
18	2
19	2
20	0
21	0
22	0
23	0
24	1
25	5
26	1
27	0
28	0
29	0
30	0
31	0
32	5
33	5
34	0
35	0
36	0
37	0
38	0
39	0
40	3
41	11
42	3
43	0
44	0
45	0
46	0
47	0
48	0
49	1
50	13
51	13
52	1
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	9
61	26
62	9
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	4
72	32
73	32
74	4
75	0
76	0
77	0
78	0
79	0
80	0
81	0
82	0
83	1
84	26
85	63
86	26
87	1
88	0
89	0
90	0
91	0
92	0
93	0
94	0
95	0
96	0
97	14
98	80
99	80
100	14
101	0
102	0
103	0
104	0
105	0

n	a(n)
1	1
2	0
3	0
4	0
5	1
6	0
7	0
8	1
9	1
10	0
11	0
12	0
13	2
14	0
15	0
16	0
17	0
18	2
19	2
20	0
21	0
22	0
23	0
24	1
25	5
26	1
27	0
28	0
29	0
30	0
31	0
32	5
33	5
34	0
35	0
36	0
37	0
38	0
39	0
40	3
41	11
42	3
43	0
44	0
45	0
46	0
47	0
48	0
49	1
50	13
51	13
52	1
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	9
61	26
62	9
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	4
72	32
73	32
74	4
75	0
76	0
77	0
78	0
79	0
80	0
81	0
82	0
83	1
84	26
85	63
86	26
87	1
88	0
89	0
90	0
91	0
92	0
93	0
94	0
95	0
96	0
97	14
98	80
99	80
100	14
101	0
102	0
103	0
104	0
105	0

n	a(n)
1	1
2	0
3	0
4	0
5	1
6	0
7	0
8	1
9	1
10	0
11	0
12	0
13	2
14	0
15	0
16	0
17	0
18	2
19	2
20	0
21	0
22	0
23	0
24	1
25	5
26	1
27	0
28	0
29	0
30	0
31	0
32	5
33	5
34	0
35	0
36	0
37	0
38	0
39	0
40	3
41	11
42	3
43	0
44	0
45	0
46	0
47	0
48	0
49	1
50	13
51	13
52	1
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	9
61	26
62	9
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	4
72	32
73	32
74	4
75	0
76	0
77	0
78	0
79	0
80	0
81	0
82	0
83	1
84	26
85	63
86	26
87	1
88	0
89	0
90	0
91	0
92	0
93	0
94	0
95	0
96	0
97	14
98	80
99	80
100	14
101	0
102	0
103	0
104	0
105	0