This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A164514 #7 Sep 01 2015 14:48:45 %S A164514 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, %T A164514 30,31,32,33,34,35,37,38,39,40,41,42,43,44,45,46,47,48,50,51,52,53,54, %U A164514 55,56,57,58,59,60,61,62,63,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79 %N A164514 1 followed by numbers that are not squares. %C A164514 Complement of A000290 for n >= 1. %C A164514 a(n) = A255437(A255527(n)) and A255437(m) < a(n) for m < A255527(n), i.e. record values in A255437. %F A164514 {1} Union A000037. %F A164514 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. %o A164514 (Haskell) %o A164514 a164514 n = a164514_list !! (n-1) %o A164514 a164514_list = 1 : a000037_list %o A164514 -- _Reinhard Zumkeller_, Mar 23 2015 %o A164514 (PARI) is(n)=!issquare(n) || n==1 \\ _Charles R Greathouse IV_, Sep 01 2015 %Y A164514 Cf. A000037, A255437, A255527. %K A164514 nonn,less,easy %O A164514 1,2 %A A164514 _Jaroslav Krizek_, Aug 14 2009 %E A164514 Edited by _R. J. Mathar_, Aug 21 2009