A339206 Lexicographically earliest sequence of distinct positive terms such that a(n) is followed by the a(n)-th digit of the sequence.

1, 10, 2, 11, 4, 20, 24, 5, 12, 50, 6, 14, 21, 15, 51, 7, 40, 8, 22, 13, 17, 60, 29, 80, 18, 19, 42, 106, 70, 23, 53, 25, 120, 26, 71, 27, 47, 220, 30, 200, 32, 100, 31, 201, 33, 34, 101, 35, 73, 333, 36, 64, 75, 202, 38, 203, 39, 902, 43, 83, 300, 44, 102, 301, 45, 90, 302, 46, 48, 103, 62, 204, 54, 303, 55

Offset

1,2

Links

Carole Dubois, Table of n, a(n) for n = 1..1739

Example

a(1) = 1 is followed by the 1st digit of the sequence (indeed, this is the 1 of 1);
a(2) = 10 is followed by the 10th digit of the sequence (this is the 2 of 24);
a(3) = 2 is followed by the 2nd digit of the sequence (this is the 1 of 10);
a(4) = 11 is followed by the 11th digit of the sequence (this is the 4 of 24);
a(5) = 4 is followed by the 4th digit of the sequence (this is the 2 of 2); etc.

Crossrefs

Cf. A339317 (a variant of this sequence).

Sequence in context: A303848 A303783 A341816 * A274606 A293869 A365625

Adjacent sequences: A339203 A339204 A339205 * A339207 A339208 A339209

Keyword

base,nonn

Author

Eric Angelini and Carole Dubois, Nov 27 2020

Status

approved