A297191 - cp's OEIS frontend

A297191 Irregular triangle read by rows formed by taking every other row of the Delannoy array (A008288) regarded as a triangle.

n	a(n)
0	1
1	1
2	3
3	1
4	1
5	7
6	13
7	7
8	1
9	1
10	11
11	41
12	63
13	41
14	11
15	1
16	1
17	15
18	85
19	231
20	321
21	231
22	85
23	15
24	1
25	1
26	19
27	145
28	575
29	1289
30	1683
31	1289
32	575
33	145
34	19
35	1
36	1
37	23
38	221
39	1159
40	3649
41	7183
42	8989
43	7183
44	3649
45	1159
46	221
47	23
48	1
49	1
50	27
51	313
52	2047
53	8361
54	22363
55	40081
56	48639
57	40081

[1, 1, 3, 1, 1, 7, 13, 7, 1, 1, 11, 41, 63, 41, 11, 1, 1, 15, 85, 231, 321, 231, 85, 15, 1, 1, 19, 145, 575, 1289, 1683, 1289, 575, 145, 19, 1, 1, 23, 221, 1159, 3649, 7183, 8989, 7183, 3649, 1159, 221, 23, 1, 1, 27, 313, 2047, 8361, 22363, 40081, 48639, 40081]

cp's OEIS Frontend

A297191 Irregular triangle read by rows formed by taking every other row of the Delannoy array (A008288) regarded as a triangle.

Table of values

List of values