OFFSET
1,1
LINKS
K. D. Bajpai, Table of n, a(n) for n = 1..6900
EXAMPLE
a(1) = 13 = 3^2 + 5 - 1: 13 is prime, 3 and 5 are consecutive primes.
a(2) = 31 = 5^2 + 7 - 1: 31 is prime, 5 and 7 are consecutive primes.
MAPLE
MATHEMATICA
A242231 = {}; Do[p = Prime[n]^2 + Prime[n + 1] - 1; If[PrimeQ[p], AppendTo[A242231, p]], {n, 500}]; A242231
Select[#[[1]]^2+#[[2]]-1&/@Partition[Prime[Range[250]], 2, 1], PrimeQ] (* Harvey P. Dale, Mar 05 2022 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
K. D. Bajpai, May 08 2014
STATUS
approved