%I #6 Apr 09 2014 10:16:43
%S 15,25,35,49,63,65,119,121,143,145,361,575,721,841,899,901,959,961,
%T 1023,1025,1261,1295,1679,1681,2519,2881,3071,3073,3599,3601,4095,
%U 4097,5041,5183,5185,6479,6721,9215,9217,10081,12287,14399,15119,20159,25199
%N Composites c where |c-m| = 1, where m is any of the smallest positive integers with their number of divisors. (m belongs to sequence A007416.)
%e The smallest positive integer with 8 divisors is 24. 24 - 1 = 23 is prime. But 24 + 1 = 25 is composite. So 25 is in the sequence, while 23 is not.
%Y A007416, A152245
%K nonn
%O 1,1
%A _Leroy Quet_, Nov 30 2008
%E Extended by _Ray Chandler_, Dec 05 2008
|