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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.

A189162 The maximum possible value for the apex of a triangle of numbers whose base consists of a permutation of the numbers 1 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)
1 1
2 3
3 9
4 24
5 61
6 148
7 350
8 808
9 1837
10 4116
11 9130
12 20056
13 43746
14 94760
15 204188
16 437712
17 934525
18 1987252
19 4212338
20 8900344
21 18756886
22 39426168
23 82693924
24 173071024
25 361567186
26 753984648
27 1569877860
28 3263572848
29 6775522852
30 14047800016
31 29091783096
32 60175932320

List of values

[1, 3, 9, 24, 61, 148, 350, 808, 1837, 4116, 9130, 20056, 43746, 94760, 204188, 437712, 934525, 1987252, 4212338, 8900344, 18756886, 39426168, 82693924, 173071024, 361567186, 753984648, 1569877860, 3263572848, 6775522852, 14047800016, 29091783096, 60175932320]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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