

A217413


Numbers of the form 2^r*11^s whose decimal representations are such that each digit 09 appears a prime number of times.


12




OFFSET

1,1


COMMENTS

See the formula section for more data, and the other sequences in crossreference for similar sequences and motivation.


LINKS



FORMULA



EXAMPLE

A217414(1)=71 and A217415(1)=5, so this sequence's first term is 2^71 * 11^5. It has two each of 0's, 3's, 4's, 6's, 8's and 9's; three each of 1's, 5's and 7's; and five 2's.


CROSSREFS

Cf. A217854, A217414, A217415, A217404, A217407, A217410, A217416, A217419, A217422, A217425, A217428, A217431.


KEYWORD

nonn,base,less


AUTHOR



STATUS

approved



