A191821 - cp's OEIS frontend

A191821 a(n) = n(2^n - n + 1) + 2^(n-1)(n^2 - 3*n + 2).

n	a(n)
1	2
2	6
3	26
4	100
5	332
6	994
7	2774
8	7368
9	18872
10	47014
11	114578
12	274300
13	647012
14	1507146
15	3473198
16	7929616
17	17956592
18	40369870
19	90177194
20	200277636
21	442498652
22	973078066
23	2130705926
24	4647288280
25	10099883432
26	21877489014
27	47244639554
28	101737037068

[2, 6, 26, 100, 332, 994, 2774, 7368, 18872, 47014, 114578, 274300, 647012, 1507146, 3473198, 7929616, 17956592, 40369870, 90177194, 200277636, 442498652, 973078066, 2130705926, 4647288280, 10099883432, 21877489014, 47244639554, 101737037068]

cp's OEIS Frontend

A191821 a(n) = n(2^n - n + 1) + 2^(n-1)(n^2 - 3*n + 2).

Table of values

List of values

cp's OEIS Frontend

A191821 a(n) = n*(2^n - n + 1) + 2^(n-1)*(n^2 - 3*n + 2).

Table of values

List of values

A191821 a(n) = n(2^n - n + 1) + 2^(n-1)(n^2 - 3*n + 2).