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 A051774 Contracted numbers. 3
 6, 12, 18, 20, 24, 28, 30, 36, 40, 42, 45, 48, 54, 56, 60, 63, 66, 70, 72, 78, 80, 84, 88, 90, 96, 99, 100, 102, 104, 105, 108, 110, 112, 114, 117, 120, 126, 130, 132, 135, 138, 140, 144, 150, 154, 156, 160, 162, 165, 168, 170, 174, 175, 176, 180, 182, 186 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS n is said to be contracted if and only if there exist distinct divisors d_1= d_k. LINKS Alois P. Heinz, Table of n, a(n) for n = 1..10000 CROSSREFS Numbers not in A051772. Sequence in context: A105289 A328608 A328671 * A119357 A097216 A326133 Adjacent sequences:  A051771 A051772 A051773 * A051775 A051776 A051777 KEYWORD nonn AUTHOR Alexander Benjamin Schwartz (QBOB(AT)aol.com), Dec 08 1999 STATUS approved

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Last modified December 5 06:51 EST 2020. Contains 338944 sequences. (Running on oeis4.)