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A295007
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Numbers n such that the largest digit of n^2 is 7.
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2
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24, 26, 42, 52, 61, 69, 74, 76, 82, 84, 85, 88, 124, 131, 132, 144, 154, 165, 166, 174, 181, 189, 194, 218, 224, 226, 234, 239, 240, 260, 265, 266, 269, 271, 274, 275, 276, 319, 326, 356, 371, 376, 384, 415, 416, 418, 419, 420, 421, 448, 455, 466, 474, 476, 520, 521, 524, 525, 526, 552
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OFFSET
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1,1
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LINKS
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FORMULA
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EXAMPLE
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24 is in this sequence because 24^2 = 576 has 7 as largest digit.
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MAPLE
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filter:= proc(n) max(convert(n^2, base, 10))=7 end proc:
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PROG
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(PARI) select( is_A295007(n)=n&&vecmax(digits(n^2))==7 , [0..999]) \\ The "n&&" avoids an error message for n=0.
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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