This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 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 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 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 14 14:50 EST 2019. Contains 329979 sequences. (Running on oeis4.)