

A336034


The rightmost digit d of a(n) jumps over d digits to the right and is duplicated there. Lexicographically earliest sequence of distinct positive integers with this property.


3



1, 2, 11, 21, 3, 12, 4, 322, 5, 42, 6, 7, 251, 8, 161, 71, 9, 13, 82, 1322, 19, 22, 14, 24, 15, 49, 43, 151, 31, 41, 91, 51, 61, 81, 111, 112, 16, 23, 17, 33, 62, 53, 27, 63, 18, 73, 37, 83, 25, 831, 715, 26, 28, 35, 29, 64, 158, 34, 36, 93, 44
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OFFSET

1,2


COMMENTS

No term ends in 0 as this would force the next integer to start with zero.


LINKS



EXAMPLE

The rightmost digit of a(1) = 1 is 1; we duplicate this digit in position 3;
The rightmost digit of a(2) = 2 is 2; we duplicate this digit in position 5;
The rightmost digit of a(3) = 11 is 1; we duplicate this digit in position 6;
The rightmost digit of a(4) = 21 is 1; we duplicate this digit in position 8;
The rightmost digit of a(5) = 3 is 3; we duplicate this digit in position 11; etc.


CROSSREFS

Cf. A336035 (duplication of the leftmost digit of a(n) to the left), A336036 (first and last digits of a(n) are duplicated respectively to the left and to the right).


KEYWORD

base,nonn


AUTHOR



STATUS

approved



