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A104315 Numbers having in decimal representation at least one zero, but with no zero in their square. 8
106, 107, 108, 109, 204, 206, 207, 208, 209, 304, 306, 307, 308, 309, 404, 406, 407, 408, 409, 604, 606, 607, 608, 704, 706, 707, 804, 806, 807, 808, 809, 904, 907, 908, 909, 1056, 1057, 1058, 1059, 1061, 1062, 1063, 1065, 1066, 1067, 1069, 1072, 1073 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
A104316(n) = a(n)^2.
LINKS
FORMULA
(1 - A168046(a(n))) * A168046(A000290(a(n))) = 1. - Reinhard Zumkeller, Jan 03 2014
EXAMPLE
909^2 = 826281, therefore 909 is a term.
PROG
(PARI) isok(n) = !vecmin(digits(n)) && vecmin(digits(n^2)); \\ Michel Marcus, Jan 03 2014
(Haskell)
a104315 n = a104315_list !! (n-1)
a104315_list = filter (\x -> a168046 x == 0 && a168046 (x ^ 2) == 1) [1..]
-- Reinhard Zumkeller, Jan 03 2014
CROSSREFS
Sequence in context: A286287 A050810 A234966 * A338602 A181739 A178314
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, Mar 01 2005
STATUS
approved

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Last modified February 28 07:05 EST 2024. Contains 370387 sequences. (Running on oeis4.)