A269178 Numbers that have a unique finite predecessor in Wolfram's Rule 124 cellular automaton; numbers n for which A269175(n) = 1.

0, 3, 6, 7, 11, 12, 14, 15, 19, 22, 24, 27, 28, 30, 35, 38, 44, 47, 48, 51, 54, 55, 56, 60, 67, 70, 76, 79, 88, 91, 94, 95, 96, 99, 102, 103, 107, 108, 110, 111, 112, 119, 120, 131, 134, 140, 143, 152, 155, 158, 159, 176, 179, 182, 183, 187, 188, 190, 191, 192, 195, 198, 199, 203, 204, 206, 207, 211, 214, 216, 219

Offset

0,2

Comments

The indexing starts from zero, because a(0) = 0 is a special case in this sequence. (Zero is the only number which is its own predecessor).

Links

Antti Karttunen, Table of n, a(n) for n = 0..5141

Prog

(Scheme, with Antti Karttunen's IntSeq-library)
(define A269178 (ZERO-POS 0 0 (COMPOSE -1+ A269175)))

Crossrefs

Cf. A269174, A269175.

Subsequence of A269177.

Sequence in context: A194366 A091067 A269177 * A120511 A176864 A347793

Adjacent sequences: A269175 A269176 A269177 * A269179 A269180 A269181

Keyword

nonn

Author

Antti Karttunen, Feb 22 2016

Status

approved