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.

A370070 a(n) = Sum_{i=0..n-1} binomial(2^i+2^(n-i-1)-2,2^i-1).

Table of values

n a(n)
0 0
1 1
2 2
3 4
4 10
5 38
6 274
7 5130
8 353186
9 180449810
10 1025875786562
11 474164444389402658
12 13339869168335987186843266
13 6036430661900479858398240235709517890
14 3241401154265052413102761158540183436937430482058498

List of values

[0, 1, 2, 4, 10, 38, 274, 5130, 353186, 180449810, 1025875786562, 474164444389402658, 13339869168335987186843266, 6036430661900479858398240235709517890, 3241401154265052413102761158540183436937430482058498]