

A282868


For all n's, the set including the terms {a(1), a(2), a(3),... a(n)} has a prime number of digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9.


1



11, 1, 22, 2, 33, 3, 44, 4, 55, 5, 66, 6, 77, 7, 88, 8, 99, 9, 1001, 0, 1010, 1111, 1100, 2222, 3333, 4444, 5555, 6666, 7777, 8888, 9999, 111111, 222222, 333333, 444444, 555555, 666666, 777777, 888888, 999999, 10000111, 200222, 200002, 202022, 11111111
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OFFSET

1,1


COMMENTS

The sequence is started with a(1) = 11 and always extended with the smallest integer not yet present and not leading to a contradiction.


LINKS

Giovanni Resta, Table of n, a(n) for n = 1..100


EXAMPLE

The set made of the first 6 terms is {11,1,22,2,33,3}; we count three 1's, three 2's and three 3's.


CROSSREFS

Sequence in context: A212488 A178243 A040131 * A013618 A014467 A174221
Adjacent sequences: A282865 A282866 A282867 * A282869 A282870 A282871


KEYWORD

nonn,base,more


AUTHOR

Eric Angelini and JeanMarc Falcoz, Mar 17 2017


EXTENSIONS

Data corrected by Giovanni Resta, Mar 17 2017


STATUS

approved



