A378925 Positive numbers whose squares have at most one digit less than 8.

1, 2, 3, 7, 9, 17, 83, 2983, 298327

Offset

1,2

Comments

No terms > 298327 with less than 11 digits.

No terms > 298327 with less than 22 digits. - Michael S. Branicky, Dec 11 2024

Links

Table of n, a(n) for n=1..9.

Example

298327 is a term because 298327^2 = 88998998929 has only one digit that is less than 8.

Mathematica

Select[Range[10^6], Count[IntegerDigits[#^2], _?(#1 < 8 &)] < 2 &]

Crossrefs

Cf. A053934, A360822, A378926, A378927.

Sequence in context: A392703 A327066 A165803 * A327779 A291740 A385675

Adjacent sequences: A378922 A378923 A378924 * A378926 A378927 A378928

Keyword

nonn,base,more

Author

Zhining Yang, Dec 11 2024

Status

approved