login
a(n) = p(p+1)^2, where p is the n-th prime.
0

%I #15 Jun 24 2013 11:42:08

%S 18,48,180,448,1584,2548,5508,7600,13248,26100,31744,53428,72324,

%T 83248,108288,154548,212400,234484,309808,368064,399748,505600,585648,

%U 720900,931588,1050804,1114048,1248048,1318900,1468548,2080768,2282544,2609028,2724400,3352500,3488704,3919348,4384048,4713408,5237748,5799600,5995444,7041024,7263748,7723188,7960000,9483184,11189248,11800368,12114100

%N a(n) = p(p+1)^2, where p is the n-th prime.

%F a(n) = A000040(n)*A110833(n) = A000040(n)*A008864(n)^2 = A008864(n)*A036690(n). - _Michel Marcus_, Jun 24 2013

%o (PARI) a(n) = prime(n)*(prime(n)+1)^2 \\ _Michel Marcus_, Jun 24 2013

%K nonn

%O 1,1

%A _Eduard Mayer_, Dec 21 2010

%E Edited by _N. J. A. Sloane_, Dec 21 2010