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%I #11 Dec 09 2016 06:19:27
%S 2,6,4,12,18,8,30,20,54,10,60,42,24,66,14,90,72,126,36,78,16,180,168,
%T 84,150,40,102,22,360,210,270,120,294,48,114,26,630,660,240,330,132,
%U 306,56,138,28,420,924,1080,480,336,144,342,80,162,32,840,720,1200,1092,504
%N Array read by antidiagonals: row n contains the positive integers each with exactly n positive "non-isolated divisors". A divisor, k, of n is non-isolated if (k-1) or (k+1) also divides n.
%C The left column (column 1) of the array is sequence A133996. This array written as a sequence is a permutation of the even positive integers. The array starts at column 1 and row 2. (There are no integers with exactly 1 non-isolated divisor.)
%e 2 non-isolated divisors: 2, 4, 8, 10, 14, ...
%e 3 non-isolated divisors: 6, 18, 54, 66, ...
%e 4 non-isolated divisors: 12, 20, 24, ...
%e etc.
%Y Cf. A134001, A133996.
%K nonn,tabl
%O 2,1
%A _Leroy Quet_, Oct 01 2007
%E Extended by _Ray Chandler_, Jun 25 2008
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