A338544 - cp's OEIS frontend

A338544 a(n) = (5floor((n-1)/2)^2 + (4+(-1)^n)floor((n-1)/2)) / 2.

n	a(n)
0	0
1	0
2	0
3	4
4	5
5	13
6	15
7	27
8	30
9	46
10	50
11	70
12	75
13	99
14	105
15	133
16	140
17	172
18	180
19	216
20	225
21	265
22	275
23	319
24	330
25	378
26	390
27	442
28	455
29	511
30	525
31	585
32	600
33	664
34	680
35	748
36	765
37	837
38	855
39	931
40	950
41	1030
42	1050
43	1134
44	1155
45	1243
46	1265
47	1357
48	1380
49	1476
50	1500
51	1600
52	1625
53	1729
54	1755
55	1863

[0, 0, 0, 4, 5, 13, 15, 27, 30, 46, 50, 70, 75, 99, 105, 133, 140, 172, 180, 216, 225, 265, 275, 319, 330, 378, 390, 442, 455, 511, 525, 585, 600, 664, 680, 748, 765, 837, 855, 931, 950, 1030, 1050, 1134, 1155, 1243, 1265, 1357, 1380, 1476, 1500, 1600, 1625, 1729, 1755, 1863]

cp's OEIS Frontend

A338544 a(n) = (5floor((n-1)/2)^2 + (4+(-1)^n)floor((n-1)/2)) / 2.

Table of values

List of values

cp's OEIS Frontend

A338544 a(n) = (5*floor((n-1)/2)^2 + (4+(-1)^n)*floor((n-1)/2)) / 2.

Table of values

List of values

A338544 a(n) = (5floor((n-1)/2)^2 + (4+(-1)^n)floor((n-1)/2)) / 2.