A268254 - OEIS

%I #5 Jan 29 2016 12:41:46

%S 3,17,143,1610,22710,384605,7594224,171161319,4333369912,121706300672,

%T 3754131927947,126136021943207,4584723067123764,179223541390399501,

%U 7497293121634632330,334153612151475666156,15807274255300507355559

%N Number of length-(n+1) 0..n arrays with new repeated values introduced in sequential order starting with zero.

%C Diagonal of A268261.

%H R. H. Hardin, <a href="/A268254/b268254.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..0....4....2....3....1....1....4....4....2....2....1....4....5....4....1....4

%e ..3....2....1....0....3....0....3....0....0....5....0....5....0....2....3....0

%e ..0....4....2....1....2....2....1....3....0....0....1....1....2....5....0....2

%e ..3....0....1....0....3....5....5....5....4....0....3....5....0....3....3....0

%e ..5....2....4....0....2....2....2....3....1....0....5....4....1....2....0....3

%e ..1....4....2....4....4....3....4....2....3....2....4....5....3....3....5....2

%Y Cf. A268261.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 29 2016