A213815 Arithmetic mean of next a(n) successive nonnegative integers is prime.

5, 1, 3, 5, 7, 5, 7, 9, 3, 5, 7, 5, 11, 1, 11, 9, 7, 1, 3, 5, 7, 21, 3, 17, 11, 9, 3, 1, 19, 21, 3, 5, 7, 5, 19, 5, 7, 9, 3, 17, 11, 1, 7, 21, 11, 1, 11, 5, 7, 5, 3, 9, 7, 1, 15, 5, 19, 5, 7, 9, 3, 5, 19, 5, 11, 9, 15, 25, 7, 5, 7, 9, 11, 1, 11, 5, 7, 1, 3

Offset

1,1

Comments

Corresponding primes: A062044(n).

Links

Table of n, a(n) for n=1..79.

Example

(0+1+2+3+4)/5 = 2 is prime, so a(1)=5,
then 5/1 = 5 is prime, so a(2)=1,
then (6+7+8)/3 = 7 is prime, so a(3)=3.

Crossrefs

Cf. A000040, A062044, A214362.

Sequence in context: A197578 A115370 A327968 * A300428 A300475 A143113

Adjacent sequences: A213812 A213813 A213814 * A213816 A213817 A213818

Keyword

easy,nonn

Author

Alex Ratushnyak, Jul 18 2012

Status

approved