The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A192086 Numbers n such that the binary weight (A000120) of n^3 is less than the binary weight of n^2. 1
 219, 309, 349, 438, 467, 565, 618, 665, 698, 701, 817, 876, 885, 934, 1130, 1141, 1143, 1236, 1291, 1297, 1299, 1330, 1396, 1397, 1402, 1435, 1629, 1634, 1659, 1752, 1755, 1770, 1771, 1773, 1868, 1905, 2155, 2229, 2260, 2282, 2286, 2353, 2401, 2472, 2582 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Numbers n such that A192085(n) < A159918(n). This sequence is infinite, since if k is in the sequence then so is 2k. - Charles R Greathouse IV, Sep 27 2016 LINKS Nathaniel Johnston, Table of n, a(n) for n = 1..2500 EXAMPLE 219^2 decimal = 1011101101011001 binary, and 219^3 decimal = 101000000100010100100011; Since the cube has fewer ones in its binary expansion than the square (eight versus ten), 219 is in the list. MAPLE A192086 := proc(n) return `if`(add(b, b=convert(n^3, base, 2))

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified April 9 20:55 EDT 2020. Contains 333363 sequences. (Running on oeis4.)