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.

A262719 a(n) is the smallest nonnegative k such that there is no 3 X 3 matrix with entries in {1,...,n} whose determinant is k.

Table of values

n a(n)
1 1
2 6
3 21
4 55
5 110
6 203
7 357
8 544
9 808
10 1177
11 1670
12 2215
13 2865
14 3599
15 4558
16 5621
17 6637
18 8041
19 9769
20 11413
21 13394
22 15593
23 17683
24 20317
25 23249
26 26063
27 29506
28 33287
29 37461
30 41692
31 46306
32 50707
33 55667
34 61723
35 67547
36 73939
37 80767
38 87941
39 94913
40 101613
41 111422

List of values

[1, 6, 21, 55, 110, 203, 357, 544, 808, 1177, 1670, 2215, 2865, 3599, 4558, 5621, 6637, 8041, 9769, 11413, 13394, 15593, 17683, 20317, 23249, 26063, 29506, 33287, 37461, 41692, 46306, 50707, 55667, 61723, 67547, 73939, 80767, 87941, 94913, 101613, 111422]