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.

A121544 Sum of all proper base 4 numbers with n digits (those not beginning with 0).

Table of values

n a(n)
1 6
2 114
3 1896
4 30624
5 491136
6 7862784
7 125822976
8 2013241344
9 32212156416
10 515395682304
11 8246335635456
12 131941389041664
13 2111062300164096
14 33776997104615424
15 540431954881806336
16 8646911282940739584
17 138350580546379186176
18 2213609288819376390144

List of values

[6, 114, 1896, 30624, 491136, 7862784, 125822976, 2013241344, 32212156416, 515395682304, 8246335635456, 131941389041664, 2111062300164096, 33776997104615424, 540431954881806336, 8646911282940739584, 138350580546379186176, 2213609288819376390144]

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

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