login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A067848
prime(n)+1 divides prime(n^2)+1.
0
1, 2, 3, 16, 93, 947, 62627, 165517
OFFSET
1,2
COMMENTS
a(9) > 3*10^5. [From Donovan Johnson, Nov 15 2009]
EXAMPLE
prime(3)+1 = 6, prime(3^2)+1 = 30, so 3 is a term of the sequence.
MATHEMATICA
Select[Range[10^5], Mod[Prime[ #^2] + 1, Prime[ # ] + 1] == 0 &]
CROSSREFS
Sequence in context: A254382 A354610 A375684 * A269067 A370201 A356882
KEYWORD
nonn
AUTHOR
Joseph L. Pe, Feb 14 2002
EXTENSIONS
a(7)-a(8) from Donovan Johnson, Nov 15 2009
STATUS
approved