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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.

A281420 Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 366", based on the 5-celled von Neumann neighborhood.

Table of values

n a(n)
0 1
1 3
2 6
3 15
4 26
5 63
6 106
7 255
8 426
9 1023
10 1706
11 4095
12 6826
13 16383
14 27310
15 65531
16 109220
17 262142
18 437163
19 1047676
20 1747642
21 4194031
22 6990224
23 16776824
24 27961740
25 67108434
26 111913983
27 268205286
28 447392735
29 1073676074
30 1789520383
31 4294901466
32 7158229423

List of values

[1, 3, 6, 15, 26, 63, 106, 255, 426, 1023, 1706, 4095, 6826, 16383, 27310, 65531, 109220, 262142, 437163, 1047676, 1747642, 4194031, 6990224, 16776824, 27961740, 67108434, 111913983, 268205286, 447392735, 1073676074, 1789520383, 4294901466, 7158229423]

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

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