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A155820 Primes of the form prime(k)^2 + 2*prime(k-1) where prime(k) is the k-th prime number. 0
13, 31, 59, 191, 887, 1019, 1931, 2903, 5471, 8087, 9587, 19031, 23099, 33119, 57587, 80651, 129587, 168083, 188351, 327179, 359987, 414731, 678971, 846383, 898691, 910103, 984047, 1040387, 1044479, 1132091, 1331711, 1411331, 1444787, 1517819, 1669259, 1909907 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..36.

EXAMPLE

prime(4)=7, prime(3)=5; 7^2+2*5=59, a prime. Hence 59 is a term.

MATHEMATICA

list = {}; Do[m = Prime[k]^2 + 2*Prime[k - 1]; If[PrimeQ[m], AppendTo[list, m]], {k, 2, 300}]; list (* Vaclav Kotesovec, Feb 14 2019 *)

CROSSREFS

Cf. A000040.

Sequence in context: A301622 A166143 A065768 * A242231 A268927 A061239

Adjacent sequences:  A155817 A155818 A155819 * A155821 A155822 A155823

KEYWORD

nonn

AUTHOR

Avik Roy (avik_3.1416(AT)yahoo.co.in), Jan 28 2009

EXTENSIONS

More terms from Vaclav Kotesovec, Feb 14 2019

Changed offset to 1 by Vaclav Kotesovec, Feb 14 2019

STATUS

approved

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Last modified June 17 19:10 EDT 2019. Contains 324198 sequences. (Running on oeis4.)