1,1

Except for first term, same as A001223.

First differences of A182986. - Omar E. Pol, Oct 31 2013

A075526 is 1 together with A001223. This is 2 together with A001223. A125266 is 3 together with A001223. - Omar E. Pol, Nov 01 2013

Table of n, a(n) for n=1..97.

(PARI) a(n) = if (n==1, 2, prime(n) - prime(n-1)); \\ Michel Marcus, Oct 31 2013

Cf. A000040.

Sequence in context: A205779 A205551 A281130 * A277891 A102722 A225530

Adjacent sequences: A054538 A054539 A054540 * A054542 A054543 A054544

nonn

G. L. Honaker, Jr., Apr 09 2000

More terms from James A. Sellers, Apr 11 2000

approved