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.

A334637 Sum of different values of x_1*x_2*...*x_n where x_1=1 and x_i-x_{i-1} is 0 or 1.

Table of values

n a(n)
1 1
2 3
3 13
4 75
5 517
6 4443
7 43093
8 486315
9 6082117
10 81407163
11 1184034613
12 19251200715
13 342825926437
14 6604284459483
15 136398242877973
16 2984396941441515
17 68215762130020357
18 1627134074774283003
19 40749275946991321333
20 1079215210446044648715
21 30311064871950344936677
22 897713839789350372765723

List of values

[1, 3, 13, 75, 517, 4443, 43093, 486315, 6082117, 81407163, 1184034613, 19251200715, 342825926437, 6604284459483, 136398242877973, 2984396941441515, 68215762130020357, 1627134074774283003, 40749275946991321333, 1079215210446044648715, 30311064871950344936677, 897713839789350372765723]