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 A217416 Numbers of the form 2^r*13^s whose decimal representations are such that each digit 0-9 appears a prime number of times. 12
 19461082905477938625332224, 1493825030770756769826391724130304, 1341437769548771819714842333610521088, 1888426137230419620556768936800026624 (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 and motivation. LINKS Table of n, a(n) for n=1..4. FORMULA a(n) = 2^A217417(n) * 13^A217418(n). EXAMPLE A217417(1)=10 and A217418(1)=20, so this sequence's first term can be simply written as 338^10 (338=2*13^2). It has two each of 0's, 1's, 5's, 6's, 7's and 8's; three each of 3's, 4's and 9's; and five 2's. CROSSREFS Cf. A217854, A217417, A217418, A217404, A217407, A217410, A217413, A217419, A217422, A217425, A217428, A217431. Sequence in context: A009190 A095444 A309072 * A358418 A133849 A343357 Adjacent sequences: A217413 A217414 A217415 * A217417 A217418 A217419 KEYWORD nonn,base,less AUTHOR James G. Merickel, Oct 03 2012 STATUS approved

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Last modified May 19 10:22 EDT 2024. Contains 372683 sequences. (Running on oeis4.)