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.

A116281 Numbers k such that k*(k+5) gives the concatenation of two numbers m and m-1.

Table of values

n a(n)
1 39
2 57
3 32262231
4 67737765
5 79321055
6 3341093417798787499092
7 3861488851737861033960
8 4747922651210186579786
9 5252077348789813420210
10 6138511148262138966036
11 6658906582201212500904
12 7232275368591793618230

List of values

[39, 57, 32262231, 67737765, 79321055, 3341093417798787499092, 3861488851737861033960, 4747922651210186579786, 5252077348789813420210, 6138511148262138966036, 6658906582201212500904, 7232275368591793618230]

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

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