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.

A252832 Number of n X 4 nonnegative integer arrays with upper left 0 and every value within 2 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.

Table of values

n a(n)
1 7
2 29
3 127
4 493
5 1474
6 3365
7 6211
8 10017
9 14783
10 20509
11 27195
12 34841
13 43447
14 53013
15 63539
16 75025
17 87471
18 100877
19 115243
20 130569
21 146855
22 164101
23 182307
24 201473
25 221599
26 242685
27 264731
28 287737
29 311703
30 336629
31 362515
32 389361
33 417167
34 445933

List of values

[7, 29, 127, 493, 1474, 3365, 6211, 10017, 14783, 20509, 27195, 34841, 43447, 53013, 63539, 75025, 87471, 100877, 115243, 130569, 146855, 164101, 182307, 201473, 221599, 242685, 264731, 287737, 311703, 336629, 362515, 389361, 417167, 445933]