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.

A274064 Number of nX3 0..2 arrays with no three equal values forming an isosceles right triangle, and new values introduced in 0..2 order.

Table of values

n a(n)
1 5
2 50
3 264
4 435
5 546
6 1209
7 3272
8 8412
9 20634
10 52751
11 137707
12 362923
13 962095
14 2559621
15 6811807
16 18145756
17 48384429
18 129108567
19 344635575
20 920181094
21 2457266397
22 6562691188
23 17528571958
24 46820546020
25 125067069103
26 334088127067

List of values

[5, 50, 264, 435, 546, 1209, 3272, 8412, 20634, 52751, 137707, 362923, 962095, 2559621, 6811807, 18145756, 48384429, 129108567, 344635575, 920181094, 2457266397, 6562691188, 17528571958, 46820546020, 125067069103, 334088127067]

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

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