A259486 - cp's OEIS frontend

A259486 a(n) = 3n^2 - 3n + 1 + 6floor((n-1)(n-2)/6).

n	a(n)
1	1
2	7
3	19
4	43
5	73
6	109
7	157
8	211
9	271
10	343
11	421
12	505
13	601
14	703
15	811
16	931
17	1057
18	1189
19	1333
20	1483
21	1639
22	1807
23	1981
24	2161
25	2353
26	2551
27	2755
28	2971
29	3193
30	3421
31	3661
32	3907
33	4159
34	4423
35	4693
36	4969
37	5257
38	5551
39	5851
40	6163
41	6481
42	6805
43	7141
44	7483
45	7831
46	8191
47	8557

[1, 7, 19, 43, 73, 109, 157, 211, 271, 343, 421, 505, 601, 703, 811, 931, 1057, 1189, 1333, 1483, 1639, 1807, 1981, 2161, 2353, 2551, 2755, 2971, 3193, 3421, 3661, 3907, 4159, 4423, 4693, 4969, 5257, 5551, 5851, 6163, 6481, 6805, 7141, 7483, 7831, 8191, 8557]

cp's OEIS Frontend

A259486 a(n) = 3n^2 - 3n + 1 + 6floor((n-1)(n-2)/6).

Table of values

List of values

cp's OEIS Frontend

A259486 a(n) = 3*n^2 - 3*n + 1 + 6*floor((n-1)*(n-2)/6).

Table of values

List of values

A259486 a(n) = 3n^2 - 3n + 1 + 6floor((n-1)(n-2)/6).