A000740 - cp's OEIS frontend

A000740 Number of 2n-bead balanced binary necklaces of fundamental period 2n, equivalent to reversed complement; also Dirichlet convolution of b_n=2^(n-1) with mu(n); also number of components of Mandelbrot set corresponding to Julia sets with an attractive n-cycle.

n	a(n)
1	1
2	1
3	3
4	6
5	15
6	27
7	63
8	120
9	252
10	495
11	1023
12	2010
13	4095
14	8127
15	16365
16	32640
17	65535
18	130788
19	262143
20	523770
21	1048509
22	2096127
23	4194303
24	8386440
25	16777200
26	33550335
27	67108608
28	134209530
29	268435455
30	536854005
31	1073741823
32	2147450880

[1, 1, 3, 6, 15, 27, 63, 120, 252, 495, 1023, 2010, 4095, 8127, 16365, 32640, 65535, 130788, 262143, 523770, 1048509, 2096127, 4194303, 8386440, 16777200, 33550335, 67108608, 134209530, 268435455, 536854005, 1073741823, 2147450880]

cp's OEIS Frontend

A000740 Number of 2n-bead balanced binary necklaces of fundamental period 2n, equivalent to reversed complement; also Dirichlet convolution of b_n=2^(n-1) with mu(n); also number of components of Mandelbrot set corresponding to Julia sets with an attractive n-cycle.

Table of values

List of values