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A087997
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a(n) is the least number with n palindromic divisors.
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0
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1, 2, 4, 6, 12, 24, 72, 66, 484, 132, 616, 264, 2112, 792, 1848, 2772, 7326, 8712, 5544, 13332, 14652, 24024, 36036, 26664, 87912, 102564, 72072, 79992, 186648, 205128, 360360, 279972, 264264, 666666, 1213212, 879912, 559944, 888888, 792792
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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FORMULA
| a(n)=Min{x; A087990[x]=n}
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EXAMPLE
| n=24: a(24)=26664 has 32 divisors of which 24 are palindromic numbers:
{1,2,3,4,6,8,11,22,33,44,66,88,101,202,303,404,
606,808,1111,2222,3333,4444,6666,8888}.
Some solutions are palindromic[like 36036], some are not[like 132].
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CROSSREFS
| Cf. A087990.
Sequence in context: A162936 A036484 A093036 * A177905 A118405 A095912
Adjacent sequences: A087994 A087995 A087996 * A087998 A087999 A088000
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KEYWORD
| base,nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), Oct 13 2003
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EXTENSIONS
| More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Oct 17 2003
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