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A030669
Cube root of A030668.
3
5, 3, 7, 16, 8, 4, 9, 20, 21, 10, 48, 5, 11, 52, 25, 55, 12, 57, 27, 59, 6, 61, 62, 29, 63, 64, 14, 66, 31, 67, 68, 32, 15, 7, 33, 154, 72, 73, 34, 16, 161, 35, 76, 164, 77, 36, 78, 169, 17, 37, 8, 174, 81, 38, 82, 178, 83, 18, 39, 182, 85, 184, 86, 40, 87, 188
OFFSET
1,1
COMMENTS
a(n) = A018852(n) if n is not a cube. - Robert Israel, Dec 25 2018
LINKS
MAPLE
f:= proc(n) local d, x;
for d from 1 do
x:= ceil((n*10^d)^(1/3));
if x^3 < (n+1)*10^d then return x fi
od
end proc:
map(f, [$1..100]); # Robert Israel, Dec 25 2018
CROSSREFS
Sequence in context: A135765 A222598 A221470 * A030679 A077891 A129735
KEYWORD
nonn,base,look
STATUS
approved