A184005 - cp's OEIS frontend

A184005 a(n) = n - 1 + ceiling(3*n^2/4); complement of A184004.

n	a(n)
1	1
2	4
3	9
4	15
5	23
6	32
7	43
8	55
9	69
10	84
11	101
12	119
13	139
14	160
15	183
16	207
17	233
18	260
19	289
20	319
21	351
22	384
23	419
24	455
25	493
26	532
27	573
28	615
29	659
30	704
31	751
32	799
33	849
34	900
35	953
36	1007
37	1063
38	1120
39	1179
40	1239
41	1301
42	1364
43	1429
44	1495
45	1563
46	1632
47	1703
48	1775
49	1849
50	1924
51	2001
52	2079
53	2159
54	2240
55	2323
56	2407
57	2493
58	2580
59	2669
60	2759

[1, 4, 9, 15, 23, 32, 43, 55, 69, 84, 101, 119, 139, 160, 183, 207, 233, 260, 289, 319, 351, 384, 419, 455, 493, 532, 573, 615, 659, 704, 751, 799, 849, 900, 953, 1007, 1063, 1120, 1179, 1239, 1301, 1364, 1429, 1495, 1563, 1632, 1703, 1775, 1849, 1924, 2001, 2079, 2159, 2240, 2323, 2407, 2493, 2580, 2669, 2759]

cp's OEIS Frontend

A184005 a(n) = n - 1 + ceiling(3*n^2/4); complement of A184004.

Table of values

List of values