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A091013
Numbers having more than one divisor d such that for some x also d-x and d+x are divisors.
2
12, 18, 24, 30, 36, 42, 45, 48, 54, 56, 60, 66, 72, 75, 78, 80, 84, 90, 96, 102, 105, 108, 112, 114, 120, 126, 132, 135, 138, 140, 144, 150, 156, 160, 162, 165, 168, 174, 180, 182, 186, 192, 195, 196, 198, 200, 204, 210, 216, 222, 224, 225, 228, 231, 234, 240
OFFSET
1,1
COMMENTS
A091009(a(n)) > 1.
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Dec 13 2003
STATUS
approved