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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. 12
380270922216319615655477248, 804540132953535715766960128, 808356196450619282354367102976, 3705202243778559670466281109192704, 29084192305393678777275954501779456 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
See the formula section for more data, and the other sequences in cross-reference for similar sequences and motivation.
LINKS
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
Sequence in context: A280349 A215403 A053776 * A217428 A146561 A181309
KEYWORD
nonn,base,less
AUTHOR
James G. Merickel, Oct 03 2012
STATUS
approved

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Last modified April 15 18:10 EDT 2024. Contains 371694 sequences. (Running on oeis4.)