This site is supported by donations to The OEIS Foundation.

 Annual Appeal: Please make a donation to keep the OEIS running. In 2018 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS"). Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A164514 1 followed by numbers that are not squares. 3
 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Complement of A000290 for n >= 1. a(n) = A255437(A255527(n)) and A255437(m) < a(n) for m < A255527(n), i.e. record values in A255437. LINKS FORMULA {1} Union A000037. a(n) = A000037(n-1) = n-1+floor(1/2 + sqrt(n - 1)) = n-1 + floor( sqrt(n-1 + floor( sqrt(n - 1) ))) for n > 1. PROG (Haskell) a164514 n = a164514_list !! (n-1) a164514_list = 1 : a000037_list -- Reinhard Zumkeller, Mar 23 2015 (PARI) is(n)=!issquare(n) || n==1 \\ Charles R Greathouse IV, Sep 01 2015 CROSSREFS Cf. A000037, A255437, A255527. Sequence in context: A072099 A046841 A244218 * A000037 A028761 A028809 Adjacent sequences:  A164511 A164512 A164513 * A164515 A164516 A164517 KEYWORD nonn,less,easy AUTHOR Jaroslav Krizek, Aug 14 2009 EXTENSIONS Edited by R. J. Mathar, Aug 21 2009 STATUS approved

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 December 17 00:41 EST 2018. Contains 318191 sequences. (Running on oeis4.)