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 A284577 #8 Apr 12 2017 04:43:19 %S A284577 2,6,2,30,90,270,2,210,630,6750,2250,378,15750,47250,2,2310,6930,6750, %T A284577 630,66150,198450,3402,90,14850,24750,92610,30870,14850,8489250, %U A284577 25467750,2,30030,90090,6750,339570,14850,382016250,372093750,9843750,1400726250,4202178750,3402,198450,20465156250,7796250,83531250,90,859950,1433250,1890 %N A284577 a(n) = A059897(A260443(n), A260443(1+n)). %H A284577 Antti Karttunen, <a href="/A284577/b284577.txt">Table of n, a(n) for n = 0..1024</a> %F A284577 a(n) = A059897(A260443(n), A260443(1+n)). %F A284577 a(n) = A277324(n) / A000290(A284578(n)). %F A284577 A001222(a(n)) = A285107(n). %o A284577 (Scheme) (define (A284577 n) (A059897bi (A260443 n) (A260443 (+ 1 n)))) ;; For A059897bi, see A059897. %Y A284577 Cf. A059897, A260443, A277324, A284576, A284578, A285107. %K A284577 nonn %O A284577 0,1 %A A284577 _Antti Karttunen_, Apr 11 2017