# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a250348 Showing 1-1 of 1 %I A250348 #4 Nov 19 2014 13:18:18 %S A250348 6,36,212,1221,6900,38543,214716,1193739,6628042,36773706,203951790, %T A250348 1130937489,6270501936,34764775155,192735759120,1068507612315, %U A250348 5923642360728,32839591629254,182056176609954,1009281733768068 %N A250348 Number of length n arrays x(i), i=1..n with x(i) in i..i+5 and no value appearing more than 2 times %C A250348 Column 5 of A250351 %H A250348 R. H. Hardin, Table of n, a(n) for n = 1..210 %F A250348 Empirical: a(n) = 6*a(n-1) -8*a(n-3) -12*a(n-4) -66*a(n-5) -332*a(n-6) +132*a(n-7) +447*a(n-8) +294*a(n-9) +630*a(n-10) +396*a(n-11) -484*a(n-12) -222*a(n-13) +192*a(n-14) -188*a(n-15) -144*a(n-16) +114*a(n-17) +50*a(n-18) -12*a(n-19) +21*a(n-20) +16*a(n-21) -a(n-24) %e A250348 Some solutions for n=6 %e A250348 ..5....3....5....3....1....2....0....0....5....4....4....0....0....5....0....0 %e A250348 ..6....1....2....5....5....4....5....6....1....2....6....2....4....1....4....6 %e A250348 ..2....7....3....2....3....2....4....4....3....4....5....7....3....3....6....6 %e A250348 ..7....7....4....6....8....7....4....5....3....5....8....8....4....7....3....7 %e A250348 ..9....9....7....7....6....4....9....5....7....7....8....7....7....5....4....9 %e A250348 ..9...10....8....5....5....7....5....7...10...10...10....9....9....7....5....7 %K A250348 nonn %O A250348 1,1 %A A250348 _R. H. Hardin_, Nov 19 2014 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE