A140253 - cp's OEIS frontend

A140253 a(2n) = 2(24^(n-1)-1) and a(2n-1) = 2*4^(n-1)-1.

n	a(n)
0	-1
1	1
2	2
3	7
4	14
5	31
6	62
7	127
8	254
9	511
10	1022
11	2047
12	4094
13	8191
14	16382
15	32767
16	65534
17	131071
18	262142
19	524287
20	1048574
21	2097151
22	4194302
23	8388607
24	16777214
25	33554431
26	67108862
27	134217727
28	268435454
29	536870911

[-1, 1, 2, 7, 14, 31, 62, 127, 254, 511, 1022, 2047, 4094, 8191, 16382, 32767, 65534, 131071, 262142, 524287, 1048574, 2097151, 4194302, 8388607, 16777214, 33554431, 67108862, 134217727, 268435454, 536870911]

cp's OEIS Frontend

A140253 a(2n) = 2(24^(n-1)-1) and a(2n-1) = 2*4^(n-1)-1.

Table of values

List of values

cp's OEIS Frontend

A140253 a(2*n) = 2*(2*4^(n-1)-1) and a(2*n-1) = 2*4^(n-1)-1.

Table of values

List of values

A140253 a(2n) = 2(24^(n-1)-1) and a(2n-1) = 2*4^(n-1)-1.