The OEIS is looking to hire part-time people to help edit core sequences, upload scanned documents, process citations, fix broken links, etc. - Neil Sloane, firstname.lastname@example.org
a(n) = A001223(n) for n>0.
n appears this number of times in A000720. - Lekraj Beedassy, Jun 19 2006
a(0) = 1, for n >= 1: a(n) = differences between consecutive primes (A001223(n)) = A158611(n+2) - A158611(n+1). Partial sums of a(n-1) = A006093(n) for n >= 1. [From Jaroslav Krizek, Aug 04 2009]
First differences of noncomposite numbers. [Juri-Stepan Gerasimov, Feb 17 2010]
This is 1 together with A001223. A054541 is 2 together with A001223. A125266 is 3 together with A001223. - Omar E. Pol, Nov 01 2013
Table of n, a(n) for n=0..96.
Cf. A000040, A075527.
Sequence in context: A193562 A249868 A255311 * A001223 A118776 A249867
Adjacent sequences: A075523 A075524 A075525 * A075527 A075528 A075529
Reinhard Zumkeller, Sep 22 2002
Correction for change of offset in A158611 and A008578 in Aug 2009 Jaroslav Krizek, Jan 27 2010