A214856 - cp's OEIS frontend

A214856 Number of triangular numbers in interval ](n-1)^2, n^2] for n>0, a(0)=1.

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

[1, 1, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1]

cp's OEIS Frontend

A214856 Number of triangular numbers in interval ](n-1)^2, n^2] for n>0, a(0)=1.

Table of values

List of values

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

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

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