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A179681 a(n)=(nextprime(n)+(n+1))(nextprime(n+1)+n)/2. 0

%I #2 Mar 30 2012 17:26:35

%S 8,21,36,55,78,119,171,190,210,253,300,377,465,496,528,595,666,779,

%T 903,946,990,1173,1378,1431,1485,1540,1596,1711,1830,2077,2346,2415,

%U 2485,2556,2628,2849,3081,3160,3240,3403,3570,3827,4095,4186,4278,4653,5050

%N a(n)=(nextprime(n)+(n+1))(nextprime(n+1)+n)/2.

%e a(1)=(nextprime(1)+2)(nextprime(2)+1)/2=(2+2)(3+1)/2=8

%e a(2)=(nextprime(2)+3)(nextprime(3)+2)/2=(3+3)(5+2)/2=21.

%t Table[(NextPrime[n]+n+1)(NextPrime[n+1]+n)/2,{n,100}]

%K nonn

%O 1,1

%A _Zak Seidov_, Jul 24 2010

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