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A295017 Squares whose largest digit is 7. 2

%I #7 Nov 13 2017 22:13:56

%S 576,676,1764,2704,3721,4761,5476,5776,6724,7056,7225,7744,15376,

%T 17161,17424,20736,23716,27225,27556,30276,32761,35721,37636,47524,

%U 50176,51076,54756,57121,57600,67600,70225,70756,72361,73441,75076,75625,76176,101761,106276,126736,137641,141376

%N Squares whose largest digit is 7.

%F a(n) = A295007(n)^2.

%o (PARI) is_A295017(n)=issquare(n)&&n&&vecmax(digits(n))==7 \\ The "n&&" avoids an error message for n=0.

%Y Cf. A295007 (square roots of the terms), A277946 .. A277948 (same for digit 2 .. 4), A295015 .. A295019 (same for digit 5 .. 9), A295022 (same for cubes).

%Y Cf. A000290 (the squares).

%K nonn,base

%O 1,1

%A _M. F. Hasler_, Nov 12 2017

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)