A340228 - cp's OEIS frontend

A340228 a(n) is the sum of the lengths of all the segments used to draw a rectangle of height 2^(n-1) and width n divided into 2^(n-1) rectangles of unit height, in turn, divided into rectangles of unit height and lengths corresponding to the parts of the compositions of n.

n	a(n)
1	4
2	11
3	27
4	64
5	149
6	342
7	775
8	1736
9	3849
10	8458
11	18443
12	39948
13	86029
14	184334
15	393231
16	835600
17	1769489
18	3735570
19	7864339
20	16515092
21	34603029
22	72351766
23	150994967
24	314572824
25	654311449
26	1358954522
27	2818572315
28	5838471196
29	12079595549
30	24964497438
31	51539607583
32	106300440608

[4, 11, 27, 64, 149, 342, 775, 1736, 3849, 8458, 18443, 39948, 86029, 184334, 393231, 835600, 1769489, 3735570, 7864339, 16515092, 34603029, 72351766, 150994967, 314572824, 654311449, 1358954522, 2818572315, 5838471196, 12079595549, 24964497438, 51539607583, 106300440608]

cp's OEIS Frontend

A340228 a(n) is the sum of the lengths of all the segments used to draw a rectangle of height 2^(n-1) and width n divided into 2^(n-1) rectangles of unit height, in turn, divided into rectangles of unit height and lengths corresponding to the parts of the compositions of n.

Table of values

List of values