A187272 - cp's OEIS frontend

A187272 a(n) = (n/4)2^(n/2)((1+sqrt(2))^2 + (-1)^n*(1-sqrt(2))^2).

n	a(n)
0	0
1	2
2	6
3	12
4	24
5	40
6	72
7	112
8	192
9	288
10	480
11	704
12	1152
13	1664
14	2688
15	3840
16	6144
17	8704
18	13824
19	19456
20	30720
21	43008
22	67584
23	94208
24	147456
25	204800
26	319488
27	442368
28	688128
29	950272
30	1474560
31	2031616
32	3145728
33	4325376
34	6684672
35	9175040
36	14155776
37	19398656
38	29884416
39	40894464
40	62914560
41	85983232

[0, 2, 6, 12, 24, 40, 72, 112, 192, 288, 480, 704, 1152, 1664, 2688, 3840, 6144, 8704, 13824, 19456, 30720, 43008, 67584, 94208, 147456, 204800, 319488, 442368, 688128, 950272, 1474560, 2031616, 3145728, 4325376, 6684672, 9175040, 14155776, 19398656, 29884416, 40894464, 62914560, 85983232]

cp's OEIS Frontend

A187272 a(n) = (n/4)2^(n/2)((1+sqrt(2))^2 + (-1)^n*(1-sqrt(2))^2).

Table of values

List of values

cp's OEIS Frontend

A187272 a(n) = (n/4)*2^(n/2)*((1+sqrt(2))^2 + (-1)^n*(1-sqrt(2))^2).

Table of values

List of values

A187272 a(n) = (n/4)2^(n/2)((1+sqrt(2))^2 + (-1)^n*(1-sqrt(2))^2).