A268254 Number of length-(n+1) 0..n arrays with new repeated values introduced in sequential order starting with zero.

3, 17, 143, 1610, 22710, 384605, 7594224, 171161319, 4333369912, 121706300672, 3754131927947, 126136021943207, 4584723067123764, 179223541390399501, 7497293121634632330, 334153612151475666156, 15807274255300507355559

Offset: 1

Author

R. H. Hardin, Jan 29 2016

Keywords

• nonn

Comments

Diagonal of A268261.

Examples

			Some solutions for n=5
..0....4....2....3....1....1....4....4....2....2....1....4....5....4....1....4
..3....2....1....0....3....0....3....0....0....5....0....5....0....2....3....0
..0....4....2....1....2....2....1....3....0....0....1....1....2....5....0....2
..3....0....1....0....3....5....5....5....4....0....3....5....0....3....3....0
..5....2....4....0....2....2....2....3....1....0....5....4....1....2....0....3
..1....4....2....4....4....3....4....2....3....2....4....5....3....3....5....2
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210

Crossrefs

Cf. A268261.