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.

A143868 a(n)= Number of distinct prime divisors (taken together) of numbers of the form 2x^2-1 for x<=10^n.

Table of values

n a(n)
1 8
2 84
3 815
4 7922
5 77250
6 759077
7 7492588
8 74198995
9 736401956
10 7319543972
11 72834161468
12 725344237597

List of values

[8, 84, 815, 7922, 77250, 759077, 7492588, 74198995, 736401956, 7319543972, 72834161468, 725344237597]