A095927 Numbers k such that k + (largest digit of k)! is a square.

0, 2, 3, 30, 40, 64, 81, 105, 436, 484, 505, 729, 736, 1022, 1105, 1216, 1420, 1936, 2203, 2416, 2644, 2704, 3130, 3340, 3636, 3780, 4105, 4176, 4201, 4332, 4464, 4504, 4761, 5056, 5364, 5505, 5569, 5776, 6004, 6336, 6505, 7060, 7504, 8080, 8521, 9220

Offset

1,2

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Example

64 is a term because 64 + 6! = 784 = 28^2.

Mathematica

Select[Range[0, 10000], IntegerQ[Sqrt[#+Max[IntegerDigits[#]]!]]&] (* Harvey P. Dale, May 14 2013 *)

Crossrefs

Cf. A054055.

Sequence in context: A354860 A228269 A167453 * A296248 A325506 A203431

Adjacent sequences: A095924 A095925 A095926 * A095928 A095929 A095930

Keyword

base,easy,nonn

Author

Jason Earls, Jul 12 2004

Status

approved