OFFSET
1,2
LINKS
Carole Dubois, Table of n, a(n) for n = 1..3654
EXAMPLE
The sequence starts with 1, 4, 9, 8, 15, 14, 27, 10, 21, 16, 25, ... and we see that:
a(1) + a(2) = 1 + 4 = 5 (a prime);
a(2) + a(3) = 4 + 9 = 13 (a prime);
a(3) + a(4) = 9 + 8 = 17 (a prime);
a(4) + a(5) = 8 + 15 = 23 (a prime); etc.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Eric Angelini and Carole Dubois, May 18 2019
STATUS
approved