%N "Comma sum" sequence: a(n+1)-a(n) = rightmost digit of a(n) + leftmost digit of a(n+1), use smallest possible solution; starting with 396.
%C The starting value 396 is the first which seems to lead to an infinite sequence; most smaller starting values "converge" to a sequence ending in 989, which has no successor. See A230288 for further discussion.
%H Eric Angelini, <a href="http://www.cetteadressecomportecinquantesignes.com/CommaSum.htm">Comma Sums</a>
%H Eric Angelini, <a href="/A230288/a230288.txt">Comma Sums</a> [Cached copy, with permission]
%o (PARI) A230288_vec(,200)
%Y Cf. A230288, A230452, A230453.
%A _M. F. Hasler_, Oct 19 2013