A228432 - cp's OEIS frontend

A228432 Sum_{i=1..floor(prime(n)/4)} floor(sqrt(i*prime(n))).

n	a(n)
1	0
2	0
3	2
4	2
5	7
6	14
7	24
8	25
9	37
10	70
11	71
12	114
13	140
14	143
15	170
16	234
17	274
18	310
19	357
20	399
21	444
22	498
23	552
24	660
25	784
26	850
27	856
28	926
29	990
30	1064
31	1310
32	1395
33	1564
34	1574
35	1850
36	1859
37	2054
38	2173
39	2277
40	2494
41	2623
42	2730
43	2986
44	3104
45	3234
46	3246
47	3656
48	4085
49	4235
50	4370

[0, 0, 2, 2, 7, 14, 24, 25, 37, 70, 71, 114, 140, 143, 170, 234, 274, 310, 357, 399, 444, 498, 552, 660, 784, 850, 856, 926, 990, 1064, 1310, 1395, 1564, 1574, 1850, 1859, 2054, 2173, 2277, 2494, 2623, 2730, 2986, 3104, 3234, 3246, 3656, 4085, 4235, 4370]

cp's OEIS Frontend

A228432 Sum_{i=1..floor(prime(n)/4)} floor(sqrt(i*prime(n))).

Table of values

List of values