A211792 - cp's OEIS frontend

A211792 a(n) = Sum_{y=1..n} Sum_{x=1..n} floor((x^k + y^k)^(1/k)) with k = 3.

n	a(n)
1	1
2	7
3	22
4	51
5	97
6	164
7	258
8	382
9	541
10	741
11	982
12	1271
13	1611
14	2008
15	2466
16	2986
17	3577
18	4241
19	4982
20	5807
21	6715
22	7714
23	8808
24	10000
25	11297
26	12701
27	14217
28	15848
29	17600
30	19477
31	21482
32	23620
33	25895
34	28313
35	30879
36	33592
37	36460
38	39487
39	42678
40	46036

[1, 7, 22, 51, 97, 164, 258, 382, 541, 741, 982, 1271, 1611, 2008, 2466, 2986, 3577, 4241, 4982, 5807, 6715, 7714, 8808, 10000, 11297, 12701, 14217, 15848, 17600, 19477, 21482, 23620, 25895, 28313, 30879, 33592, 36460, 39487, 42678, 46036]

cp's OEIS Frontend

A211792 a(n) = Sum_{y=1..n} Sum_{x=1..n} floor((x^k + y^k)^(1/k)) with k = 3.

Table of values

List of values