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A295019 Squares whose largest digit is 9. 7
9, 49, 169, 196, 289, 529, 729, 900, 961, 1089, 1296, 1369, 1849, 1936, 2209, 2809, 2916, 3249, 3969, 4096, 4489, 4900, 5329, 5929, 6889, 7396, 7569, 7921, 8649, 9025, 9216, 9409, 9604, 9801, 10609, 11449, 12769, 12996, 13689, 13924, 15129, 16129, 16900, 17689, 17956, 18496, 18769 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..47.

FORMULA

a(n) = A295009(n)^2.

MATHEMATICA

Select[Range[150]^2, Max[IntegerDigits[#]]==9&] (* Harvey P. Dale, Oct 27 2019 *)

PROG

(PARI) is_A295019(n)=issquare(n)&&n&&vecmax(digits(n))==9 \\ "&&n" avoids an error message for n=0.

CROSSREFS

Cf. A295009 (square roots of the terms),  A277946 - A277948 (same for digit 2..4), A295015 - A295018 (same for digit 5..8).

Cf. A000290 (the squares).

Sequence in context: A087691 A014730 A212503 * A164343 A273374 A020245

Adjacent sequences:  A295016 A295017 A295018 * A295020 A295021 A295022

KEYWORD

nonn,base

AUTHOR

M. F. Hasler, Nov 12 2017

STATUS

approved

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Last modified February 19 00:35 EST 2020. Contains 332028 sequences. (Running on oeis4.)