A067286 - OEIS

%I #5 Mar 30 2012 17:27:34

%S 0,1,1,3,1,5,5,3,7,1,9,20,30,40,50,60,70,80,90,100,91,92,93,120,94,95,

%T 130,96,97,140,98,90,150,200,160,210,170,220,180,230,190,240,250,300,

%U 260,310,270,320,280,330,290,340,350,400,360,410,370,420,380,430,390

%N a(n) = largest integer k such that k is not of the form m + reverse(m) for any m (cf. A067031) and A067030(n) occurs in the 'Reverse and Add' trajectory of k.

%C a(n) <= A067034(n). If A067034(n) is in A067030 then a(n) < A067034(n), otherwise a(n) = A067034(n).

%H <a href="/index/Res#RAA">Index entries for sequences related to Reverse and Add!</a>

%e a(14) = 50, since A067030(14) = 55 and the five integers 7, 23, 32, 41, 50 are not of the form m + reverse(m) for any m, 55 occurs in the trajectory of each of them and 50 is the largest one. a(25) = 95, since A067030(25) = 154 and the eleven integers 1, 25, 34, 43, 52, 59, 61, 68, 70, 86, 95 are not of the form m + reverse(m) for any m, 154 occurs in the trajectory of each of them and 95 is the largest one.

%Y Cf. A067030, A067031, A067034, A067284, A067285.

%K base,nonn

%O 0,4

%A _Klaus Brockhaus_, Feb 04 2002