# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a201434 Showing 1-1 of 1 %I A201434 #5 Mar 31 2012 12:36:44 %S A201434 1,3,15,29,55,167,295,647,1427,3399,6987,15915,35035,78815,175659, %T A201434 401885,907063,2070241,4703563,10756853,24527921,56167839,128565473, %U A201434 295006361,677007927,1556684111,3580113745,8243974707,18993055553,43795271957 %N A201434 Number of zero-sum -3..3 arrays of n elements with first through fourth differences also in -3..3 %C A201434 Column 3 of A201439 %H A201434 R. H. Hardin, Table of n, a(n) for n = 1..210 %e A201434 Some solutions for n=10 %e A201434 .-1...-3....3...-2...-1...-3....2....3....0....2...-3....0....1...-2....3...-1 %e A201434 .-1....0....0....0....0....0....2....1....0...-1...-1...-2....1....0....2....2 %e A201434 ..1....0...-2....0....2....1....3...-2...-2...-1....1...-3....2....0....1....2 %e A201434 ..2....0...-2...-1....3....1....3...-3...-3...-1....2...-2....2....0...-1....0 %e A201434 ..2....1...-2...-2....2....0....1...-2...-3...-2....2...-1....2....0...-2...-2 %e A201434 ..0....3...-2...-1....0....0...-2...-1...-1...-2....2....1....1....1...-2...-2 %e A201434 .-2....3...-1....1...-2....0...-3....0....1...-1....1....3...-1....2...-2....0 %e A201434 .-2....1....1....2...-3....1...-2....0....2....1...-1....3...-3....2...-1....1 %e A201434 ..0...-2....3....2...-2....1...-1....1....3....3...-2....1...-3....0....1....1 %e A201434 ..1...-3....2....1....1...-1...-3....3....3....2...-1....0...-2...-3....1...-1 %K A201434 nonn %O A201434 1,2 %A A201434 _R. H. Hardin_ Dec 01 2011 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE