A029784 Squares such that digits of sqrt(n) are not present in n.

4, 9, 16, 49, 64, 81, 289, 324, 484, 576, 841, 1089, 1156, 1444, 1521, 1936, 2209, 2809, 2916, 3249, 3364, 3481, 3844, 4489, 5184, 5929, 6241, 7056, 7744, 8464, 8836, 20736, 24649, 24964, 29929, 34969, 35344, 36864, 37636, 43681, 44944, 50176, 56169, 56644

Offset

1,1

Links

Giovanni Resta, Table of n, a(n) for n = 1..10000

Formula

a(n) = A029783(n)^2. - Michel Marcus, Aug 08 2018

Mathematica

Select[Range[500], {} == Intersection @@ IntegerDigits[{#, #^2}] &]^2 (* Giovanni Resta, Aug 08 2018 *)

Crossrefs

Cf. A029783, A029785, A029786, A111116, A113316.

Sequence in context: A034377 A034378 A062387 * A112735 A059931 A027382

Adjacent sequences: A029781 A029782 A029783 * A029785 A029786 A029787

Keyword

nonn,base

Author

Patrick De Geest

Extensions

More terms from Giovanni Resta, Aug 08 2018

Status

approved