A263640 Number of length n arrays of permutations of 0..n-1 with each element moved by -5 to 5 places and with no two consecutive increases.
1, 2, 5, 17, 70, 349, 1389, 4255, 13529, 42700, 141128, 479893, 1639260, 5542549, 18548087, 62017274, 207179998, 694864003, 2330691027, 7821792735, 26241990473, 87992594947, 295032591603, 989183937210, 3317043061446, 11123439095051
Offset: 1
Keywords
Examples
Some solutions for n=6 ..1....5....5....2....0....4....4....3....5....0....1....3....5....4....4....1 ..4....2....3....3....4....0....2....2....3....5....5....2....4....3....5....0 ..3....3....1....1....3....5....5....4....2....4....3....0....3....2....3....5 ..5....1....0....0....2....3....3....1....4....3....0....4....2....1....1....3 ..2....4....4....5....1....2....0....5....1....2....4....1....0....0....0....2 ..0....0....2....4....5....1....1....0....0....1....2....5....1....5....2....4
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Crossrefs
Cf. A263643.
Comments