A206604 - cp's OEIS frontend

A206604 Number of integers in the smallest interval containing both minimal and maximal possible apex values of an addition triangle whose base is a permutation of n+1 consecutive integers.

n	a(n)
0	1
1	1
2	3
3	9
4	27
5	73
6	189
7	465
8	1115
9	2601
10	5973
11	13489
12	30149
13	66641
14	146233
15	318369
16	689403
17	1484137
18	3181797
19	6790641
20	14445101
21	30617841
22	64724553
23	136426849
24	286926757
25	601999633
26	1260707529
27	2634831585
28	5497982025
29	11452601761
30	23823827825
31	49484904257

[1, 1, 3, 9, 27, 73, 189, 465, 1115, 2601, 5973, 13489, 30149, 66641, 146233, 318369, 689403, 1484137, 3181797, 6790641, 14445101, 30617841, 64724553, 136426849, 286926757, 601999633, 1260707529, 2634831585, 5497982025, 11452601761, 23823827825, 49484904257]

cp's OEIS Frontend

A206604 Number of integers in the smallest interval containing both minimal and maximal possible apex values of an addition triangle whose base is a permutation of n+1 consecutive integers.

Table of values

List of values