A220953 - cp's OEIS frontend

A220953 Primes p such that floor(sqrt(2)) + floor(sqrt(3)) + floor(sqrt(5)) + ... + floor(sqrt(p)) is prime.

n	a(n)
1	3
2	29
3	61
4	73
5	127
6	181
7	229
8	251
9	281
10	313
11	367
12	487
13	503
14	509
15	547
16	587
17	599
18	601
19	613
20	617
21	659
22	727
23	739
24	751
25	797
26	809
27	829
28	863
29	881
30	983
31	1033
32	1061
33	1087
34	1103
35	1153
36	1163
37	1223
38	1277
39	1381
40	1861
41	1871
42	2039
43	2063
44	2099
45	2113
46	2131
47	2203
48	2221

[3, 29, 61, 73, 127, 181, 229, 251, 281, 313, 367, 487, 503, 509, 547, 587, 599, 601, 613, 617, 659, 727, 739, 751, 797, 809, 829, 863, 881, 983, 1033, 1061, 1087, 1103, 1153, 1163, 1223, 1277, 1381, 1861, 1871, 2039, 2063, 2099, 2113, 2131, 2203, 2221]

cp's OEIS Frontend

A220953 Primes p such that floor(sqrt(2)) + floor(sqrt(3)) + floor(sqrt(5)) + ... + floor(sqrt(p)) is prime.

Table of values

List of values