A077675 Squarefree numbers with square nonzero square digits.

11, 14, 19, 41, 89, 91, 94, 111, 114, 118, 119, 141, 149, 181, 191, 194, 199, 411, 418, 419, 449, 481, 489, 491, 494, 498, 499, 811, 814, 818, 849, 881, 889, 894, 898, 899, 911, 914, 919, 941, 949, 989, 991, 994, 998, 1111, 1114, 1118, 1119, 1141, 1149

Offset

1,1

Links

Table of n, a(n) for n=1..51.

Mathematica

Select[Flatten[Table[FromDigits/@Tuples[{1, 4, 8, 9}, n], {n, 2, 4}]], SquareFreeQ] (* Harvey P. Dale, Oct 10 2013 *)

Crossrefs

Cf. A077674.

Sequence in context: A191933 A193097 A343855 * A266988 A248642 A121297

Adjacent sequences: A077672 A077673 A077674 * A077676 A077677 A077678

Keyword

base,nonn

Author

Amarnath Murthy, Nov 16 2002

Extensions

Corrected and extended by David Garber, Nov 19 2002

Status

approved