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A061659
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In base 5 n and n^2 contain the same digits in the same proportion.
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12
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9726, 10512, 10904, 12702, 12886, 13766, 13898, 14008, 15086, 37644, 41156, 42006, 42106, 44048, 44448, 44578, 44756, 44826, 48630, 48664, 49482, 49626, 49652, 49676, 51704, 52560, 52582, 54262, 54520, 54982, 57922, 59672, 60778, 63510, 64430, 64736, 65432
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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Alois P. Heinz, Table of n, a(n) for n = 1..1000
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EXAMPLE
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9726 = 302401_5 and 9726^2 = 143204020301_5.
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MAPLE
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p:= n-> add(x^i, i=convert(n, base, 5)):
a:= proc(n) option remember; local k;
for k from 1+`if`(n=1, 0, a(n-1))
while p(k)*2<>p(k^2) do od; k
end:
seq(a(n), n=1..50); # Alois P. Heinz, May 10 2015
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CROSSREFS
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Cf. A061656, A061657, A061658, A061660, A061661, A061662, A061663, A114258, A061664.
Sequence in context: A246228 A234819 A236795 * A206631 A031860 A023687
Adjacent sequences: A061656 A061657 A061658 * A061660 A061661 A061662
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KEYWORD
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base,easy,nonn
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AUTHOR
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Erich Friedman, Jun 16 2001
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EXTENSIONS
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Offset changed to 1 by Alois P. Heinz, May 10 2015
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STATUS
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approved
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