A203462 Numbers n such that n!! contains every digit at least once.

34, 35, 37, 41, 47, 48, 49, 51, 53, 54, 55, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108

Offset

1,1

Links

Table of n, a(n) for n=1..63.

Example

34 is in the sequence because 34!! = 46620662575398912000 contains every digit at least once.

Mathematica

Select[Range[101], Length[Union[IntegerDigits[#!!]]] == 10 &]

Crossrefs

Cf. A006882, A178960.

Sequence in context: A318148 A271984 A254756 * A270311 A257315 A045561

Adjacent sequences: A203459 A203460 A203461 * A203463 A203464 A203465

Keyword

nonn,base

Author

Michel Lagneau, Jan 02 2012

Status

approved