A235597 Squares in which each digit exceeds the previous digit by more than one.

0, 1, 4, 9, 16, 25, 36, 49, 169, 1369

Offset

1,3

Links

Table of n, a(n) for n=1..10.

Example

256 is not a term because 6-5=1.

Mathematica

Select[Range[0, 40]^2, Min[Differences[IntegerDigits[#]]]>1&] (* Vincenzo Librandi, Jan 17 2014 *)

Crossrefs

A subsequence of A122683.

Sequence in context: A235484 A028820 A122683 * A309002 A328953 A328558

Adjacent sequences: A235594 A235595 A235596 * A235598 A235599 A235600

Keyword

nonn,base,fini,full

Author

N. J. A. Sloane, Jan 16 2014, following a suggestion from Vincenzo Librandi.

Status

approved