A257448 - cp's OEIS frontend

A257448 a(n) = 13(2^n - 1) - 3n^2 - 9*n.

n	a(n)
1	1
2	9
3	37
4	111
5	283
6	657
7	1441
8	3051
9	6319
10	12909
11	26149
12	52695
13	105859
14	212265
15	425161
16	851043
17	1702903
18	3406725
19	6814477
20	13630095
21	27261451
22	54524289
23	109050097
24	218101851
25	436205503
26	872412957
27	1744828021
28	3489658311
29	6979319059
30	13958640729

[1, 9, 37, 111, 283, 657, 1441, 3051, 6319, 12909, 26149, 52695, 105859, 212265, 425161, 851043, 1702903, 3406725, 6814477, 13630095, 27261451, 54524289, 109050097, 218101851, 436205503, 872412957, 1744828021, 3489658311, 6979319059, 13958640729]

cp's OEIS Frontend

A257448 a(n) = 13(2^n - 1) - 3n^2 - 9*n.

Table of values

List of values

cp's OEIS Frontend

A257448 a(n) = 13*(2^n - 1) - 3*n^2 - 9*n.

Table of values

List of values

A257448 a(n) = 13(2^n - 1) - 3n^2 - 9*n.