A078187 Smaller of the two successive squares which differ in the use of only one digit.

1, 4, 49, 225, 441, 576, 784, 1296, 2304, 5041, 7396, 8464, 9409, 12769, 17689, 18496, 21609, 23104, 26569, 30276, 32041, 34596, 36481, 40401, 45369, 53824, 55696, 62001, 69169, 71289, 77284, 116964, 121104, 123904, 148996

Offset

1,2

Comments

Sequence is infinite. Consider squaring 2*10^k+1 and 2*10^k+2 for k >= 1: (441, 484), (40401, 40804), (4004001, 4008004), etc.

Links

Table of n, a(n) for n=1..35.

Example

1296 is a member as 1296 and 1369 differ in the use of only one digit i.e. 2 and 3.

Crossrefs

Sequence in context: A166838 A166826 A295535 * A100256 A163944 A000596

Adjacent sequences: A078184 A078185 A078186 * A078188 A078189 A078190

Keyword

nonn,base

Author

Amarnath Murthy, Nov 21 2002

Extensions

Extended and edited by D. S. McNeil, Nov 20 2010

Status

approved