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.

A107099 G.f. satisfies A(A(x)) = x + 4*x^3, where A(x) = Sum_{n>=0} a(n)*x^(2*n+1).

Table of values

n a(n)
0 1
1 2
2 -6
3 36
4 -266
5 2028
6 -13596
7 50088
8 566694
9 -16598580
10 232284876
11 -1912070088
12 631155132
13 239439857272
14 -2781218767224
15 -17362458802992
16 795693633448710
17 -458070639409908
18 -335724554310292548
19 4520379769156382616
20 109439050270732883028
21 -3828757746830590219608

List of values

[1, 2, -6, 36, -266, 2028, -13596, 50088, 566694, -16598580, 232284876, -1912070088, 631155132, 239439857272, -2781218767224, -17362458802992, 795693633448710, -458070639409908, -335724554310292548, 4520379769156382616, 109439050270732883028, -3828757746830590219608]