A172481 - cp's OEIS frontend

A172481 a(n) = (3n2^n+2^(n+4)+2*(-1)^n)/18.

n	a(n)
0	1
1	2
2	5
3	11
4	25
5	55
6	121
7	263
8	569
9	1223
10	2617
11	5575
12	11833
13	25031
14	52793
15	111047
16	233017
17	487879
18	1019449
19	2126279
20	4427321
21	9204167
22	19107385
23	39612871
24	82021945
25	169636295
26	350457401
27	723284423
28	1491308089
29	3072094663
30	6323146297
31	13004206535
32	26724240953

[1, 2, 5, 11, 25, 55, 121, 263, 569, 1223, 2617, 5575, 11833, 25031, 52793, 111047, 233017, 487879, 1019449, 2126279, 4427321, 9204167, 19107385, 39612871, 82021945, 169636295, 350457401, 723284423, 1491308089, 3072094663, 6323146297, 13004206535, 26724240953]

cp's OEIS Frontend

A172481 a(n) = (3n2^n+2^(n+4)+2*(-1)^n)/18.

Table of values

List of values

cp's OEIS Frontend

A172481 a(n) = (3*n*2^n+2^(n+4)+2*(-1)^n)/18.

Table of values

List of values

A172481 a(n) = (3n2^n+2^(n+4)+2*(-1)^n)/18.