A211559 Number of nonnegative integer arrays of length n+5 with new values 0 upwards introduced in order, and containing the value 5.
1, 22, 295, 3145, 29503, 256565, 2134122, 17337685, 139635380, 1127444190, 9204978242, 76496257502, 650255333547, 5673699543152, 50929138898237, 470895301126099, 4486844907734841, 44052656933795691, 445462140383086124
Offset: 1
Keywords
Examples
Some solutions for n=5 ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0 ..1....1....1....1....1....1....1....1....0....0....1....1....1....1....1....0 ..2....2....2....2....0....2....2....2....1....0....2....0....0....2....2....1 ..3....3....1....1....2....3....3....1....2....1....3....0....2....3....2....2 ..4....4....3....3....1....3....4....3....3....2....4....2....3....4....0....3 ..3....3....4....4....2....4....0....1....4....3....0....3....0....5....2....0 ..2....2....5....5....3....5....5....4....5....4....0....2....3....0....3....4 ..3....5....4....4....4....1....2....2....2....1....5....4....4....4....4....5 ..5....5....2....3....2....6....5....2....6....3....3....5....5....6....5....4 ..4....5....4....4....5....6....1....5....2....5....3....2....2....4....0....2
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Formula
Empirical: a(n) = sum{j in 6..n+5}stirling2(n+5,j)
Comments