A067286 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.

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, 130, 96, 97, 140, 98, 90, 150, 200, 160, 210, 170, 220, 180, 230, 190, 240, 250, 300, 260, 310, 270, 320, 280, 330, 290, 340, 350, 400, 360, 410, 370, 420, 380, 430, 390

Offset: 0

Author

Klaus Brockhaus, Feb 04 2002

Keywords

• base
• nonn

Comments

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

Examples

			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.
		

Links

• Index entries for sequences related to Reverse and Add!

Crossrefs

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