A254323 Remove in decimal representation of A254143(n) all repeated digits.

1, 4, 7, 16, 28, 34, 37, 49, 67, 136, 148, 238, 259, 268, 34, 37, 367, 469, 67, 156, 1258, 136, 1348, 1369, 1468, 278, 238, 2359, 2479, 2569, 268, 34, 37, 367, 367, 489, 469, 67, 1356, 1458, 12358, 12469, 12478, 136, 1348, 13468, 13579, 1468, 2378, 2579

Offset: 1

Author

Reinhard Zumkeller, Jan 28 2015

Keywords

• nonn
• base

Comments

a(n) <= 123456789 for all n, and a(n) < 123456789 for n < 396;

a(396) = 123456789 = A050289(1);

a(n) = A137564(A254143(n)) = A004086(A227362(A254143(n))).

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A254143, A137564, A227362, A004086, A050289.

Cf. A254338 (initial digits), A254339 (final digits).

Programs

Haskell

a254323 = a137564 . a254143