A346295 - cp's OEIS frontend

A346295 a(n) = Sum_{k=0..n} (2^k + 1) * (2^k + 2) / 2.

n	a(n)
0	3
1	9
2	24
3	69
4	222
5	783
6	2928
7	11313
8	44466
9	176307
10	702132
11	2802357
12	11197110
13	44763831
14	179006136
15	715926201
16	2863508154
17	11453639355
18	45813770940
19	183253510845
20	733010897598
21	2932037298879
22	11728136612544
23	46912521284289
24	187650034805442
25	750600038558403

[3, 9, 24, 69, 222, 783, 2928, 11313, 44466, 176307, 702132, 2802357, 11197110, 44763831, 179006136, 715926201, 2863508154, 11453639355, 45813770940, 183253510845, 733010897598, 2932037298879, 11728136612544, 46912521284289, 187650034805442, 750600038558403]

cp's OEIS Frontend

A346295 a(n) = Sum_{k=0..n} (2^k + 1) * (2^k + 2) / 2.

Table of values

List of values