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.

A369773 Maximal coefficient of (1 + x) * (1 + x - x^2) * ... * (1 + x - x^2 + ... - (-x)^n).

Table of values

n a(n)
0 1
1 1
2 2
3 3
4 4
5 6
6 19
7 59
8 233
9 1189
10 7046
11 45326
12 356517
13 3108808
14 30028121
15 325635647
16 3830546752
17 49403859787
18 685063715374
19 10162709827329
20 162776892315940
21 2754021620252692
22 49463507801582609
23 940216720983170113
24 18786988751008626812

List of values

[1, 1, 2, 3, 4, 6, 19, 59, 233, 1189, 7046, 45326, 356517, 3108808, 30028121, 325635647, 3830546752, 49403859787, 685063715374, 10162709827329, 162776892315940, 2754021620252692, 49463507801582609, 940216720983170113, 18786988751008626812]