A226637 Numbers m having with m+1 no common digit in decimal representations.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 29, 39, 49, 59, 69, 79, 99, 199, 299, 399, 499, 599, 699, 799, 999, 1999, 2999, 3999, 4999, 5999, 6999, 7999, 9999, 19999, 29999, 39999, 49999, 59999, 69999, 79999, 99999, 199999, 299999, 399999

Offset

1,3

Links

Table of n, a(n) for n=1..45.

Formula

A076489(a(n)) = 0;

A000030(a(n)) <> 8 for n > 9.

Prog

(Haskell)
a226637 n = a226637_list !! (n-1)
a226637_list = filter ((== 0) . a076489) [0..]
(PARI) isok(k) = #setintersect(Set(digits(k)), Set(digits(k+1))) == 0; \\ Michel Marcus, Feb 07 2025

Crossrefs

Cf. A000030, A076489.

Sequence in context: A190876 A051885 A227378 * A274841 A247227 A048410

Adjacent sequences: A226634 A226635 A226636 * A226638 A226639 A226640

Keyword

nonn,base

Author

Reinhard Zumkeller, Sep 01 2013

Status

approved