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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.

A145615 Numerator of the polynomial A_l(x) = sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=4.

Table of values

n a(n)
1 18
2 883
3 23566
4 5278979
5 380087174
6 66895348819
7 13914232622662
8 178102177617521
9 4036982692723202
10 6136213692944321089
11 32726473029037904778
12 72260052448115886127009
13 2890402097924635887833902

List of values

[18, 883, 23566, 5278979, 380087174, 66895348819, 13914232622662, 178102177617521, 4036982692723202, 6136213692944321089, 32726473029037904778, 72260052448115886127009, 2890402097924635887833902]

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

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