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.

A147808 Sum of n-digit numbers which are balanced: the first [n/2] digits have the same sum as the last [n/2] digits.

Table of values

n a(n)
1 45
2 495
3 49500
4 3314850
5 331431000
6 27336542310
7 2733612983100
8 238305122029260
9 23830484311542600
10 2140037814262627400
11 214003761418373774000
12 19587943639318412097360
13 1958794348735327250973600
14 181693537570273520779480800

List of values

[45, 495, 49500, 3314850, 331431000, 27336542310, 2733612983100, 238305122029260, 23830484311542600, 2140037814262627400, 214003761418373774000, 19587943639318412097360, 1958794348735327250973600, 181693537570273520779480800]

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

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