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 A046893 a(n) has exactly n permutations of digits that are primes. 0

%I

%S 1,2,13,103,107,1007,1036,1019,1013,1049,1079,1237,10099,10013,10135,

%T 10123,10039,10127,10079,10238,10234,10235,10139,10478,12349,12347,

%U 10378,12359,14579,10789,100336,10237,12389,23579,10279,100136,12379

%N a(n) has exactly n permutations of digits that are primes.

%t a = Table[0, {40}]; Do[b = Count[ PrimeQ[ FromDigits /@ Permutations[ IntegerDigits[n]]], True]; If[b < 40 && a[[b + 1]] == 0, a[[b + 1]] = n; Print[b, " ", n]], {n, 1, 110000}]

%Y Cf. A039999.

%K nonn,base

%O 0,2

%A _David W. Wilson_

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Last modified December 14 19:27 EST 2019. Contains 329987 sequences. (Running on oeis4.)