The OEIS is supported by the many generous donors to the OEIS Foundation.

 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 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A022551 Numbers that are the sum of 2 squares and a nonnegative cube. 7
 0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 56, 57, 58, 59, 60, 61, 62 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS Jean-François Alcover, Table of n, a(n) for n = 1..943 Index entries for sequences related to sums of squares MAPLE isA022551 := proc(n) local a, b, c ; for c from 0 do if c^3 > n then return false; end if; for a from 0 do b2 := n-c^3-a^2 ; if b2 < a^2 then break; end if; if issqr(b2) then return true; end if; end do: end do: end proc: # R. J. Mathar, Sep 02 2016 MATHEMATICA max = 1000; Table[x^2 + y^2 + z^3, {x, 0, Sqrt[max]}, {y, x, Sqrt[max - x^2]}, {z, 0, (max - x^2 - y^2)^(1/3)}] // Flatten // Union // Select[#, # <= max&]& (* Jean-François Alcover, Mar 23 2020 *) CROSSREFS Complement of A022552. Sequence in context: A292638 A000378 A335513 * A172251 A286997 A187396 Adjacent sequences: A022548 A022549 A022550 * A022552 A022553 A022554 KEYWORD nonn AUTHOR N. J. A. Sloane. STATUS approved

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

Last modified December 6 01:58 EST 2023. Contains 367594 sequences. (Running on oeis4.)