OFFSET
1,2
COMMENTS
Its complement is 8, 28, 66, 128, 220, 348, 518, 519, 737, 1009, 1341, 1739, 2209, 2757, 3389, 4111, 4929, ..., .
EXAMPLE
For n=8, floor(8^(1/3))=2, and floor(floor(8^(1/3))^(1/3))=1 as do the remaining six terms, so a(8) = 2 + 7*1 = 9.
MATHEMATICA
a[n_] := Plus @@ Rest@ NestList[ Floor[#^(1/3)] &, n, n]; Array[a, 60]
CROSSREFS
KEYWORD
nonn
AUTHOR
Robert G. Wilson v, Nov 15 2012
STATUS
approved