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A046892 Number of permutations of digits of A046891(n) that are primes. 2
0, 1, 2, 3, 4, 5, 8, 9, 10, 11, 13, 16, 18, 22, 31, 34, 37, 39, 40, 49, 52, 64, 80, 87, 93, 115, 121, 144, 149, 160, 172, 225, 233, 298, 299, 308, 384, 399, 408, 423, 475, 484, 569, 571, 738, 806, 835, 863, 934, 1247, 1413, 1525, 1739, 1775, 2282, 2303, 2325 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..57.

MATHEMATICA

a = {}; b = -1; Do[c = Count[ PrimeQ[ FromDigits /@ Permutations[IntegerDigits[n]]], True]; If[c > b, b = c; a = Append[a, c]], {n, 1, 10^8}]; a

CROSSREFS

Cf. A039999, A046891.

Sequence in context: A047369 A004827 A155941 * A068406 A276878 A047247

Adjacent sequences:  A046889 A046890 A046891 * A046893 A046894 A046895

KEYWORD

nonn,base

AUTHOR

David W. Wilson

STATUS

approved

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Last modified February 19 09:33 EST 2020. Contains 332041 sequences. (Running on oeis4.)