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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.

A321541 a(0)=1; thereafter a(n) = 3*a(n-1) with digits rearranged into nonincreasing order.

Table of values

n a(n)
0 1
1 3
2 9
3 72
4 621
5 8631
6 98532
7 996552
8 9986652
9 99996552
10 999986652
11 9999996552
12 99999986652
13 999999996552
14 9999999986652
15 99999999996552
16 999999999986652
17 9999999999996552
18 99999999999986652
19 999999999999996552
20 9999999999999986652
21 99999999999999996552
22 999999999999999986652

List of values

[1, 3, 9, 72, 621, 8631, 98532, 996552, 9986652, 99996552, 999986652, 9999996552, 99999986652, 999999996552, 9999999986652, 99999999996552, 999999999986652, 9999999999996552, 99999999999986652, 999999999999996552, 9999999999999986652, 99999999999999996552, 999999999999999986652]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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