A152521 Juxtaposition of prime(2n-1) and prime(2n) is a prime.

23, 3137, 8389, 157163, 167173, 233239, 257263, 331337, 353359, 467479, 509521, 523541, 653659, 661673, 677683, 727733, 11871193, 12011213, 12591277, 13671373, 14531459, 16691693, 17091721, 17411747, 21792203, 22072213, 22812287

Offset

1,1

Comments

Primes in sequence A007795.

Links

Table of n, a(n) for n=1..27.

N. Lygeros, G-test.

Prog

(PARI) forstep(n=1, 1000, 2, a=eval(Str(prime(n), prime(n+1))); if(isprime(a), print1(a", ")))

Crossrefs

Cf. A007795.

Sequence in context: A233446 A088385 A030461 * A267692 A136363 A340330

Adjacent sequences: A152518 A152519 A152520 * A152522 A152523 A152524

Keyword

base,nonn

Author

Herman Jamke (hermanjamke(AT)fastmail.fm), Dec 06 2008

Status

approved