proposed

approved

editing

proposed

The trajectory of 113 begins 113, 424, 848, 1696, 8657, 16225, 68486, 136972, 416603, ...; at 416603 it joins the (presumably) palindrome-free trajectory of A063048(16) = 10735, hence 424, 848 and 68486 are the three palindromes in the trajectory of 113 and 113 is a term.

trajectory of 113 and 113 is a term.

approved

editing

_Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), _, Nov 20 2003

<a href="/Sindx_index/Res.html#RAA">Index entries for sequences related to Reverse and Add!</a>

<a href="/Sindx_Res.html#RAA">Index entries for sequences related to Reverse and Add!</a>

nonn,base,new

<a href="http://www.research.att.com/~njas/sequences/Sindx_Res.html#RAA">Index entries for sequences related to Reverse and Add!</a>

nonn,base,new

There Numbers n such that there are (presumably) three palindromes in the Reverse and Add! trajectory of n.

nonn,base,new

There are (presumably) three palindromes in the Reverse and Add! trajectory of n.

18, 27, 36, 45, 54, 63, 69, 72, 78, 81, 87, 90, 96, 99, 113, 125, 126, 128, 137, 146, 149, 156, 157, 162, 163, 165, 168, 169, 172, 175, 180, 183, 188, 189, 193, 194, 195, 197, 220, 224, 225, 227, 232, 236, 242, 245, 248, 252, 255, 256, 259, 261, 264, 267, 268

1,1

For terms < 2000 each palindrome is reached from the preceding one or from the start in at most 24 steps; after the presumably last one no further palindrome is reached in 2000 steps.

<a href="http://www.research.att.com/~njas/sequences/Sindx_Res.html#RAA">Index entries for sequences related to Reverse and Add!</a>

The trajectory of 113 begins 113, 424, 848, 1696, 8657, 16225, 68486, 136972, 416603, ...; at 416603 it joins the (presumably) palindrome-free trajectory of A063048(16) = 10735, hence 424, 848 and 68486 are the three palindromes in the

trajectory of 113 and 113 is a term.

Cf. A023108, A023109, A065001, A070742, A077594.

nonn,base

Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Nov 20 2003

approved