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Even numbers n such that n^2*2^n + 1 is prime.
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%I #11 Jun 13 2017 11:57:04

%S 2,4,30,100,142,144,150,198,304,782,858,3638,6076,12876,30180,48470

%N Even numbers n such that n^2*2^n + 1 is prime.

%D Posting to NMBRTHRY(AT)LISTSERV.NODAK.EDU by _Mike Oakes_ Dec 30 2000 entitled "Gaussian analogues of the Cullen and Woodall primes."

%H <a href="/index/Ga#gaussians">Index entries for Gaussian integers and primes</a>

%t Do[ If[ PrimeQ[ n^2*2^n + 1], Print[n] ], {n, 2, 50000, 2} ]

%o (PARI) is(n)=n%2==0 && ispseudoprime(n^2*2^n+1) \\ _Charles R Greathouse IV_, Jun 13 2017

%K nonn

%O 1,1

%A _Robert G. Wilson v_, Jan 02 2001