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.

A211012 Total area of all squares and rectangles after 2^n stages in the toothpick structure of A139250, assuming the toothpicks have length 2.

Table of values

n a(n)
0 0
1 0
2 8
3 48
4 224
5 960
6 3968
7 16128
8 65024
9 261120
10 1046528
11 4190208
12 16769024
13 67092480
14 268402688
15 1073676288
16 4294836224
17 17179607040
18 68718952448
19 274876858368
20 1099509530624
21 4398042316800
22 17592177655808
23 70368727400448
24 281474943156224

List of values

[0, 0, 8, 48, 224, 960, 3968, 16128, 65024, 261120, 1046528, 4190208, 16769024, 67092480, 268402688, 1073676288, 4294836224, 17179607040, 68718952448, 274876858368, 1099509530624, 4398042316800, 17592177655808, 70368727400448, 281474943156224]

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

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