A111857 - cp's OEIS frontend

A111857 Number of numbers m <= n such that 7 equals the first digit after decimal point of square root of n in decimal representation.

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

[0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 11, 11, 11, 11, 11, 11]

cp's OEIS Frontend

A111857 Number of numbers m <= n such that 7 equals the first digit after decimal point of square root of n in decimal representation.

Table of values

List of values

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

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

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