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%I #9 Jul 17 2019 04:43:53
%S 16,24,68,84,158,180,289,330,474,534,735,810,1072,1158,1474,1586,1958,
%T 2093,2543,2697,3238,3403,4013,4208,4896,5128,5918,6164,7046,7337,
%U 8311,8645,9717,10097,11269,11691,12996,13443,14891,15352,16909,17422,19104,19674,21478
%N a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n+1-k), where k = [ (n+1)/2 ], s = (composite numbers).
%Y Cf. A002808 (composite numbers).
%K nonn
%O 1,1
%A _Clark Kimberling_
%E a(26) corrected by _Sean A. Irvine_, Jul 17 2019
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