1,1

Where Gilbreath's triangle is triangle of numbers arising from Gilbreath's conjecture: successive absolute differences of primes.

Table of n, a(n) for n=1..56.

Cf. A036261, A036262.

Sequence in context: A095726 A322375 A261931 * A287266 A306719 A185400

Adjacent sequences: A173813 A173814 A173815 * A173817 A173818 A173819

nonn

Juri-Stepan Gerasimov, Feb 25 2010

Extended by T. D. Noe, Jul 13 2011

approved