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.

A277233 Numerators of the partial sums of the squares of the expansion coefficients of 1/sqrt(1-x). Also the numerators of the Landau constants.

Table of values

n a(n)
0 1
1 5
2 89
3 381
4 25609
5 106405
6 1755841
7 7207405
8 1886504905
9 7693763645
10 125233642041
11 508710104205
12 33014475398641
13 133748096600189
14 2165115508033649
15 8754452051708621
16 9054883309760265929
17 36559890613417481741
18 590105629859261338481
19 2379942639329101454549

List of values

[1, 5, 89, 381, 25609, 106405, 1755841, 7207405, 1886504905, 7693763645, 125233642041, 508710104205, 33014475398641, 133748096600189, 2165115508033649, 8754452051708621, 9054883309760265929, 36559890613417481741, 590105629859261338481, 2379942639329101454549]