A374921 - cp's OEIS frontend

A374921 Irregular triangle read by rows: T(n,k), n >= 0, k >= 1, in which if n is even then row n lists the first A008619(n) even indexed terms of A027336 otherwise if n is odd then row n lists the first A008619(n) odd indexed terms of A027336.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	1
10	2
11	4
12	1
13	1
14	3
15	6
16	1
17	2
18	4
19	8
20	1
21	1
22	3
23	6
24	11
25	1
26	2
27	4
28	8
29	15
30	1
31	1
32	3
33	6
34	11
35	20
36	1
37	2
38	4
39	8
40	15
41	26
42	1
43	1
44	3
45	6
46	11
47	20
48	35
49	1
50	2
51	4
52	8
53	15
54	26
55	45
56	1
57	1
58	3
59	6
60	11
61	20
62	35
63	58
64	1
65	2
66	4
67	8
68	15
69	26
70	45
71	75
72	1
73	1
74	3
75	6
76	11
77	20
78	35
79	58
80	96
81	1
82	2
83	4
84	8
85	15
86	26
87	45
88	75
89	121

[1, 1, 1, 1, 1, 2, 1, 1, 3, 1, 2, 4, 1, 1, 3, 6, 1, 2, 4, 8, 1, 1, 3, 6, 11, 1, 2, 4, 8, 15, 1, 1, 3, 6, 11, 20, 1, 2, 4, 8, 15, 26, 1, 1, 3, 6, 11, 20, 35, 1, 2, 4, 8, 15, 26, 45, 1, 1, 3, 6, 11, 20, 35, 58, 1, 2, 4, 8, 15, 26, 45, 75, 1, 1, 3, 6, 11, 20, 35, 58, 96, 1, 2, 4, 8, 15, 26, 45, 75, 121]

cp's OEIS Frontend

A374921 Irregular triangle read by rows: T(n,k), n >= 0, k >= 1, in which if n is even then row n lists the first A008619(n) even indexed terms of A027336 otherwise if n is odd then row n lists the first A008619(n) odd indexed terms of A027336.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	1
10	2
11	4
12	1
13	1
14	3
15	6
16	1
17	2
18	4
19	8
20	1
21	1
22	3
23	6
24	11
25	1
26	2
27	4
28	8
29	15
30	1
31	1
32	3
33	6
34	11
35	20
36	1
37	2
38	4
39	8
40	15
41	26
42	1
43	1
44	3
45	6
46	11
47	20
48	35
49	1
50	2
51	4
52	8
53	15
54	26
55	45
56	1
57	1
58	3
59	6
60	11
61	20
62	35
63	58
64	1
65	2
66	4
67	8
68	15
69	26
70	45
71	75
72	1
73	1
74	3
75	6
76	11
77	20
78	35
79	58
80	96
81	1
82	2
83	4
84	8
85	15
86	26
87	45
88	75
89	121

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	1
10	2
11	4
12	1
13	1
14	3
15	6
16	1
17	2
18	4
19	8
20	1
21	1
22	3
23	6
24	11
25	1
26	2
27	4
28	8
29	15
30	1
31	1
32	3
33	6
34	11
35	20
36	1
37	2
38	4
39	8
40	15
41	26
42	1
43	1
44	3
45	6
46	11
47	20
48	35
49	1
50	2
51	4
52	8
53	15
54	26
55	45
56	1
57	1
58	3
59	6
60	11
61	20
62	35
63	58
64	1
65	2
66	4
67	8
68	15
69	26
70	45
71	75
72	1
73	1
74	3
75	6
76	11
77	20
78	35
79	58
80	96
81	1
82	2
83	4
84	8
85	15
86	26
87	45
88	75
89	121

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	1
10	2
11	4
12	1
13	1
14	3
15	6
16	1
17	2
18	4
19	8
20	1
21	1
22	3
23	6
24	11
25	1
26	2
27	4
28	8
29	15
30	1
31	1
32	3
33	6
34	11
35	20
36	1
37	2
38	4
39	8
40	15
41	26
42	1
43	1
44	3
45	6
46	11
47	20
48	35
49	1
50	2
51	4
52	8
53	15
54	26
55	45
56	1
57	1
58	3
59	6
60	11
61	20
62	35
63	58
64	1
65	2
66	4
67	8
68	15
69	26
70	45
71	75
72	1
73	1
74	3
75	6
76	11
77	20
78	35
79	58
80	96
81	1
82	2
83	4
84	8
85	15
86	26
87	45
88	75
89	121