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.

A351046 a(1)=1; a(2)=4; for n>2, a(n) = a(n-1) + A000217(n)*a(n-2).

Table of values

n a(n)
1 1
2 4
3 10
4 50
5 200
6 1250
7 6850
8 51850
9 360100
10 3211850
11 26978450
12 277502750
13 2732541700
14 31870330450
15 359775334450
16 4694140275650
17 59739766446500
18 862437753582650
19 12212993378417650
20 193324921630774150
21 3014526392045251300
22 51925731564631111250
23 883935015769120470050

List of values

[1, 4, 10, 50, 200, 1250, 6850, 51850, 360100, 3211850, 26978450, 277502750, 2732541700, 31870330450, 359775334450, 4694140275650, 59739766446500, 862437753582650, 12212993378417650, 193324921630774150, 3014526392045251300, 51925731564631111250, 883935015769120470050]