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A080035
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"Orderly" Friedman numbers (or "good" Friedman numbers): Friedman numbers (A036057) where the construction digits are used in the proper order.
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4
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127, 343, 736, 1285, 2187, 2502, 2592, 2737, 3125, 3685, 3864, 3972, 4096, 6455, 11264, 11664, 12850, 13825, 14641, 15552, 15585, 15612, 15613, 15617, 15618, 15621, 15622, 15623, 15624, 15626, 15632, 15633, 15642, 15645, 15655, 15656
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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REFERENCES
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Credit goes to Mike Reid (Brown University) and Eric Friedman (Stetson University).
Colin Rose, "Radical Narcissistic numbers", J. Recreational Mathematics, vol. 33, (2004-2005), pp. 250-254. See page 251.
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LINKS
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Table of n, a(n) for n=1..36.
Eric Friedman, Friedman Numbers.
_Robert G. Wilson v_, Table of n, a(n) for n = 1..108 . [From Robert G. Wilson v, May 28 2010]
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EXAMPLE
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127 = -1 + 2^7, 343 = (3 + 4) ^ 3, 736 = 7 + 3^6, etc.....
The 4th "orderly" Freidman number = 1285 = (1 + 2^8)* 5
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CROSSREFS
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Cf. A036057.
Sequence in context: A157949 A142165 A031933 * A162004 A112419 A142201
Adjacent sequences: A080032 A080033 A080034 * A080036 A080037 A080038
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KEYWORD
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nonn,base,nice
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AUTHOR
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David Rattner (david_rattner(AT)prusec.com), Mar 14 2003
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EXTENSIONS
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More terms from Alonso del Arte, Aug 25 2004
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STATUS
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approved
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