A102301 - cp's OEIS frontend

A102301 a(n) = ((3n + 1)2^(n+3) + 9 + (-1)^n)/18.

n	a(n)
0	1
1	4
2	13
3	36
4	93
5	228
6	541
7	1252
8	2845
9	6372
10	14109
11	30948
12	67357
13	145636
14	313117
15	669924
16	1427229
17	3029220
18	6407965
19	13514980
20	28428061
21	59652324
22	124897053
23	260978916
24	544327453
25	1133394148
26	2356266781
27	4891490532
28	10140895005
29	20997617892
30	43426891549

[1, 4, 13, 36, 93, 228, 541, 1252, 2845, 6372, 14109, 30948, 67357, 145636, 313117, 669924, 1427229, 3029220, 6407965, 13514980, 28428061, 59652324, 124897053, 260978916, 544327453, 1133394148, 2356266781, 4891490532, 10140895005, 20997617892, 43426891549]

cp's OEIS Frontend

A102301 a(n) = ((3n + 1)2^(n+3) + 9 + (-1)^n)/18.

Table of values

List of values

cp's OEIS Frontend

A102301 a(n) = ((3*n + 1)*2^(n+3) + 9 + (-1)^n)/18.

Table of values

List of values

A102301 a(n) = ((3n + 1)2^(n+3) + 9 + (-1)^n)/18.