A217413 Numbers of the form 2^r*11^s whose decimal representations are such that each digit 0-9 appears a prime number of times.

380270922216319615655477248, 804540132953535715766960128, 808356196450619282354367102976, 3705202243778559670466281109192704, 29084192305393678777275954501779456

Offset

1,1

Comments

See the formula section for more data, and the other sequences in cross-reference for similar sequences and motivation.

Links

Table of n, a(n) for n=1..5.

Formula

A217413(n) = 2^A217414(n) * 11^A217415(n).

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.

Sequence in context: A280349 A215403 A053776 * A217428 A146561 A181309

Adjacent sequences: A217410 A217411 A217412 * A217414 A217415 A217416

Keyword

nonn,base,less

Author

James G. Merickel, Oct 03 2012

Status

approved