A093311 - OEIS

A093311

a(n) is the k-th upper twin prime, where k = n!.

5, 5, 7, 43, 463, 4639, 51349, 563011, 6445993, 80358601, 1066687471, 15116681443, 228312888439

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OFFSET

0,1

LINKS

FORMULA

From Amiram Eldar, Jul 07 2024: (Start)

a(n) = A006512(n!).

a(n) = A093310(n) + 2. (End)

PROG

(PARI)

twinu(n) = { local(c, x); c=0; x=1; while(c<n, if(isprime(prime(x)+2), c++); x++; ); return(prime(x)) }

g(n) = for(x=0, n, print1(twinu(x!), ", "))

CROSSREFS

KEYWORD

nonn,more

AUTHOR

EXTENSIONS

a(9)-a(12) from Giovanni Resta, Jun 10 2018

STATUS

approved