A062826 Square nialpdromes not ending in 0.

1, 4, 9, 64, 81, 441, 841, 961, 7744, 8874441, 9853321, 999887641

Offset

1,2

Comments

Probably finite.

There are no more terms up to 10^11. - Charles R Greathouse IV, Jan 02 2014

No more terms up to 10^42. - Chai Wah Wu, Dec 07 2015

Links

Table of n, a(n) for n=1..12.

Maple

F:= proc(x) local L; L:= convert(x, base, 10); max(L[1..-2] - L[2..-1]) <= 0 end proc:
select(F, [seq(seq((10*x+y)^2, y=1..9), x=0..10^6)]); # Robert Israel, Dec 08 2015

Crossrefs

Nialpdromes are A009996. Square nialpdromes are A028822.

Sequence in context: A270696 A069495 A029788 * A201918 A263675 A140483

Adjacent sequences: A062823 A062824 A062825 * A062827 A062828 A062829

Keyword

base,nonn,more

Author

David W. Wilson, Jul 20 2001

Status

approved