A271728 Numbers n such that A076478(n)=1.

1, 5, 6, 8, 9, 15, 17, 20, 21, 22, 25, 27, 28, 29, 31, 32, 33, 41, 44, 48, 49, 51, 55, 57, 59, 60, 63, 64, 65, 66, 70, 73, 74, 76, 78, 80, 81, 82, 83, 86, 87, 89, 90, 91, 92, 94, 95, 96, 97, 107, 111, 116, 117, 120, 125, 127, 130

Offset: 1

Author

Gabriel Conant, Apr 13 2016

Keywords

• nonn

Comments

By definition, this sequence enumerates a 'universal' set S of nonnegative integers: meaning that every finite binary sequence occurs as a consecutive subsequence of the characteristic function of S (viewed as an infinite binary sequence). The infinite graph with vertex set the integers and edge relation '|x-y| in S' is a countable random graph.

Links

• Gabriel Conant, Table of n, a(n) for n = 1..3000
• P. J. Cameron, The random graph, The Mathematics of Paul Erdos, 2nd ed., Algorithms Combin., 14 (1997), 333-351.

Crossrefs

Cf. A076478.