A269176 Numbers not present in A269174; indices of zeros in A269175.

1, 2, 4, 5, 8, 9, 10, 13, 16, 17, 18, 20, 21, 23, 25, 26, 29, 32, 33, 34, 36, 37, 39, 40, 41, 42, 43, 45, 46, 49, 50, 52, 53, 57, 58, 61, 64, 65, 66, 68, 69, 71, 72, 73, 74, 75, 77, 78, 80, 81, 82, 83, 84, 85, 86, 87, 89, 90, 92, 93, 97, 98, 100, 101, 104, 105, 106, 109, 113, 114, 116, 117, 121, 122, 125, 128, 129

Offset

1,2

Comments

Numbers n for which there is no any k such that A269174(k) = n.

These are binary representations (shown in decimal) of Garden of Eden patterns in Wolfram's Rule 124 cellular automaton if infinite predecessors are forbidden.

Links

Antti Karttunen, Table of n, a(n) for n = 1..11672

Eric Weisstein's World of Mathematics, Elementary Cellular Automaton

S. Wolfram, A New Kind of Science

Index entries for sequences related to cellular automata

Index to Elementary Cellular Automata

Prog

(Scheme, with Antti Karttunen's IntSeq-library)
(define A269176 (ZERO-POS 1 1 A269175))

Crossrefs

Cf. A269174, A269175.

Cf. A269177 (complement).

Sequence in context: A169612 A084581 A121996 * A091072 A001481 A248151

Adjacent sequences: A269173 A269174 A269175 * A269177 A269178 A269179

Keyword

nonn

Author

Antti Karttunen, Feb 22 2016

Status

approved