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 A036982 #9 Jul 02 2025 16:01:56 %S A036982 1,5,13,29,61,125,253,509,1021,1023,1025,1027,1029,1031,1033,1035, %T A036982 1037,1039,1041,1043,1045,1047,1049,1051,1053,1055,1057,1059,1061, %U A036982 1063,1065,1067,1069,1071,1073,1075,1077,1079,1081,1083,1085,1087,1089,1091,1093 %N A036982 a(n)=[ a*a(n-1)+b ]/p^r, where a=2.001, b=3.2, p=2 and p^r is the highest power of p dividing [ a*a(n-1)+b ]. %C A036982 A cyclic sequence. The period is 6767. %C A036982 If an array is made of columns of -nacci sequences, fibo-, tribo- etc. all starting w. 1,1,2 etc, the nw to se diagonals can be extended by computation. The above minus the first digit is diagonal 4. See A159741 for details. [From Al Hakanson (hawkuu(AT)gmail.com), Apr 20 2009] %Y A036982 Cf. A029580. %K A036982 nonn %O A036982 0,2 %A A036982 _Yasutoshi Kohmoto_ %E A036982 More terms from _James Sellers_, Aug 08 2000