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%I #14 Jan 29 2019 19:23:43
%S 0,0,1,6,10,21,28,45,78,91,136,171,190,231,300,378,406,496,561,595,
%T 703,780,903,1081,1176,1225,1326,1378,1485,1891,2016,2211,2278,2628,
%U 2701,2926,3160,3321,3570,3828,3916,4371,4465,4656,4753,5356,5995,6216,6328
%N a(n) = (prime(n)-3)*(prime(n)-5)/8.
%C All terms are triangular numbers. - _Gary Detlefs_, Apr 14 2012
%H T. D. Noe, <a href="/A030007/b030007.txt">Table of n, a(n) for n = 2..1000</a>
%t Table[(p - 3) (p - 5)/8, {p, Prime[Range[2, 50]]}] (* _T. D. Noe_, Apr 16 2012 *)
%Y Cf. A000217.
%K nonn
%O 2,4
%A _N. J. A. Sloane_
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