A187273 - cp's OEIS frontend

A187273 a(n) = (n/4)3^(n/2)((1+sqrt(3))^2+(-1)^n*(1-sqrt(3))^2).

n	a(n)
0	0
1	3
2	12
3	27
4	72
5	135
6	324
7	567
8	1296
9	2187
10	4860
11	8019
12	17496
13	28431
14	61236
15	98415
16	209952
17	334611
18	708588
19	1121931
20	2361960
21	3720087
22	7794468
23	12223143
24	25509168
25	39858075
26	82904796
27	129140163
28	267846264
29	416118303
30	860934420
31	1334448351
32	2754990144
33	4261625379
34	8781531084
35	13559717115
36	27894275208

[0, 3, 12, 27, 72, 135, 324, 567, 1296, 2187, 4860, 8019, 17496, 28431, 61236, 98415, 209952, 334611, 708588, 1121931, 2361960, 3720087, 7794468, 12223143, 25509168, 39858075, 82904796, 129140163, 267846264, 416118303, 860934420, 1334448351, 2754990144, 4261625379, 8781531084, 13559717115, 27894275208]

cp's OEIS Frontend

A187273 a(n) = (n/4)3^(n/2)((1+sqrt(3))^2+(-1)^n*(1-sqrt(3))^2).

Table of values

List of values

cp's OEIS Frontend

A187273 a(n) = (n/4)*3^(n/2)*((1+sqrt(3))^2+(-1)^n*(1-sqrt(3))^2).

Table of values

List of values

A187273 a(n) = (n/4)3^(n/2)((1+sqrt(3))^2+(-1)^n*(1-sqrt(3))^2).