A116601 - cp's OEIS frontend

A116601 a(0) = a(1) = 0; for n >= 2, a(n) = floor(sqrt(2^(n-2)-1)).

n	a(n)
0	0
1	0
2	0
3	1
4	1
5	2
6	3
7	5
8	7
9	11
10	15
11	22
12	31
13	45
14	63
15	90
16	127
17	181
18	255
19	362
20	511
21	724
22	1023
23	1448
24	2047
25	2896
26	4095
27	5792
28	8191
29	11585
30	16383
31	23170
32	32767
33	46340
34	65535
35	92681
36	131071
37	185363
38	262143
39	370727
40	524287
41	741455
42	1048575
43	1482910
44	2097151
45	2965820
46	4194303
47	5931641

[0, 0, 0, 1, 1, 2, 3, 5, 7, 11, 15, 22, 31, 45, 63, 90, 127, 181, 255, 362, 511, 724, 1023, 1448, 2047, 2896, 4095, 5792, 8191, 11585, 16383, 23170, 32767, 46340, 65535, 92681, 131071, 185363, 262143, 370727, 524287, 741455, 1048575, 1482910, 2097151, 2965820, 4194303, 5931641]

cp's OEIS Frontend

A116601 a(0) = a(1) = 0; for n >= 2, a(n) = floor(sqrt(2^(n-2)-1)).

Table of values

List of values