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 A229766 #13 Dec 21 2013 03:05:10 %S A229766 1,3,4523,11991,18197,66075,72225,141683,1092489,3168099,6001209, %T A229766 6226335,6435309,12489657,17906499,50429883,51928701,68301841, %U A229766 295742437,390117873,542959199,554456167,566494057 %N A229766 Odd numbers whose square's binary reversal is also a square. %C A229766 A003166 is a subsequence, except A003166(1)=0. %C A229766 All odd numbers n such that A068527(A030101(n^2)) = 0. - _Antti Karttunen_, Dec 20 2013 %F A229766 a(n) = sqrt(A229687(n)). %o A229766 (Scheme, with _Antti Karttunen_'s IntSeq-library) %o A229766 (define A229766 (MATCHING-POS 1 1 (lambda (n) (and (odd? n) (zero? (A068527 (A030101 (* n n)))))))) %Y A229766 Cf. A000290, A003166, A030101, A068527, A229687. %K A229766 nonn,base %O A229766 1,2 %A A229766 _Alex Ratushnyak_, Dec 19 2013