A105951 - cp's OEIS frontend

A105951 a(2n) = -(2^(2n+1) + 1), a(2*n+1) = (2^(n+1) - (-1)^n)^2.

n	a(n)
0	-3
1	1
2	-9
3	25
4	-33
5	49
6	-129
7	289
8	-513
9	961
10	-2049
11	4225
12	-8193
13	16129
14	-32769
15	66049
16	-131073
17	261121
18	-524289
19	1050625
20	-2097153
21	4190209
22	-8388609
23	16785409
24	-33554433
25	67092481
26	-134217729
27	268468225
28	-536870913
29	1073676289
30	-2147483649

[-3, 1, -9, 25, -33, 49, -129, 289, -513, 961, -2049, 4225, -8193, 16129, -32769, 66049, -131073, 261121, -524289, 1050625, -2097153, 4190209, -8388609, 16785409, -33554433, 67092481, -134217729, 268468225, -536870913, 1073676289, -2147483649]

cp's OEIS Frontend

A105951 a(2n) = -(2^(2n+1) + 1), a(2*n+1) = (2^(n+1) - (-1)^n)^2.

Table of values

List of values

cp's OEIS Frontend

A105951 a(2*n) = -(2^(2*n+1) + 1), a(2*n+1) = (2^(n+1) - (-1)^n)^2.

Table of values

List of values

A105951 a(2n) = -(2^(2n+1) + 1), a(2*n+1) = (2^(n+1) - (-1)^n)^2.