A025197 - cp's OEIS frontend

A025197 a(n) = floor( Sum_{1 <= i < j <= n} ((sqrt(j)-sqrt(i))^3) ).

n	a(n)
2	0
3	0
4	1
5	4
6	8
7	16
8	27
9	43
10	64
11	92
12	128
13	172
14	227
15	294
16	373
17	467
18	576
19	703
20	849
21	1015
22	1203
23	1414
24	1652
25	1916
26	2209
27	2533
28	2890
29	3282
30	3710
31	4177
32	4684
33	5234
34	5829
35	6470
36	7161
37	7903
38	8698
39	9549
40	10458
41	11427
42	12458
43	13555
44	14719
45	15953
46	17259
47	18640
48	20098
49	21636
50	23257

[0, 0, 1, 4, 8, 16, 27, 43, 64, 92, 128, 172, 227, 294, 373, 467, 576, 703, 849, 1015, 1203, 1414, 1652, 1916, 2209, 2533, 2890, 3282, 3710, 4177, 4684, 5234, 5829, 6470, 7161, 7903, 8698, 9549, 10458, 11427, 12458, 13555, 14719, 15953, 17259, 18640, 20098, 21636, 23257]

cp's OEIS Frontend

A025197 a(n) = floor( Sum_{1 <= i < j <= n} ((sqrt(j)-sqrt(i))^3) ).

Table of values

List of values