A083141 - OEIS

%I #12 Apr 19 2016 01:07:33

%S 2,9,35,91,209,377,629,817,1219,1769,2201,2923,3649,4343,5029,5989,

%T 7729,8479,10117,11573,12629,14299,16019,17711,21631,23129,24617,

%U 26857,28667,30623,35687,38383,42607,44063,50213,52699,56363,60799,63961,68681

%N Main diagonal of array in A083140.

%F a(n) = prime(n)*prime(2*n-2).

%t Table[ Prime[n]*Prime[2n - 2], {n, 2, 41}]

%o (PARI) vector(50, n, if (n==1, 2, prime(n)*prime(2*n-2))) \\ _Michel Marcus_, Dec 19 2014

%Y Cf. A083140.

%K nonn

%O 1,1

%A _Yasutoshi Kohmoto_, Jun 05 2003

%E Edited and extended by _Robert G. Wilson v_, Jun 11 2003