login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A067125
Floor(cube root(concatenation of first n cubes)).
0
1, 2, 12, 56, 567, 5674, 56749, 567497, 5674971, 122263545, 2634088227, 56749710539, 1222635450364, 26340882275280, 567497105399112, 12226354503645281, 263408822752809483, 5674971053991125006
OFFSET
1,2
EXAMPLE
a(4) = floor((182764)^(1/3)) = 56
CROSSREFS
Cf. A067124.
Sequence in context: A256150 A180073 A363402 * A177782 A005038 A094780
KEYWORD
easy,nonn,base
AUTHOR
Amarnath Murthy, Jan 08 2002
EXTENSIONS
Edited by Charles R Greathouse IV, Apr 28 2010
STATUS
approved