cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A189390 The maximum possible value for the apex of a triangle of numbers whose base consists of a permutation of the numbers 0 to n, and each number in a higher row is the sum of the two numbers directly below it.

Table of values

n a(n)
0 0
1 1
2 5
3 16
4 45
5 116
6 286
7 680
8 1581
9 3604
10 8106
11 18008
12 39650
13 86568
14 187804
15 404944
16 868989
17 1856180
18 3950194
19 8376056
20 17708310
21 37329016
22 78499620
23 164682416
24 344789970
25 720430216
26 1502768996
27 3129355120
28 6507087396
29 13510929104

List of values

[0, 1, 5, 16, 45, 116, 286, 680, 1581, 3604, 8106, 18008, 39650, 86568, 187804, 404944, 868989, 1856180, 3950194, 8376056, 17708310, 37329016, 78499620, 164682416, 344789970, 720430216, 1502768996, 3129355120, 6507087396, 13510929104]