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A056135
Smallest positive integer other than n where geometric mean of n and a(n) is an integer.
3
4, 8, 12, 1, 20, 24, 28, 2, 1, 40, 44, 3, 52, 56, 60, 1, 68, 2, 76, 5, 84, 88, 92, 6, 1, 104, 3, 7, 116, 120, 124, 2, 132, 136, 140, 1, 148, 152, 156, 10, 164, 168, 172, 11, 5, 184, 188, 3, 1, 2, 204, 13, 212, 6, 220, 14, 228, 232, 236, 15, 244, 248, 7, 1, 260, 264, 268, 17
OFFSET
1,1
FORMULA
a(n)=A056134(n)^2/n. If n is squarefree then a(n)=4n, otherwise a(n)=A007913(n)
CROSSREFS
Sequence in context: A126006 A164088 A109239 * A159586 A120230 A086480
KEYWORD
easy,nonn
AUTHOR
Henry Bottomley, Jun 13 2000
STATUS
approved