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.

A189391 The minimum 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 3
3 8
4 19
5 44
6 98
7 216
8 467
9 1004
10 2134
11 4520
12 9502
13 19928
14 41572
15 86576
16 179587
17 372044
18 768398
19 1585416
20 3263210
21 6711176
22 13775068
23 28255568
24 57863214
25 118430584
26 242061468
27 494523536
28 1009105372
29 2058327344
30 4194213448

List of values

[0, 1, 3, 8, 19, 44, 98, 216, 467, 1004, 2134, 4520, 9502, 19928, 41572, 86576, 179587, 372044, 768398, 1585416, 3263210, 6711176, 13775068, 28255568, 57863214, 118430584, 242061468, 494523536, 1009105372, 2058327344, 4194213448]