Number of -n..n arrays x(0..4) of 5 elements with zero sum and no two neighbors equal.

Terms

a(0) =14a(1) =200a(2) =892a(3) =2734a(4) =6504a(5) =13324a(6) =24394a(7) =41344a(8) =65788a(9) =99858a(10) =145596a(11) =205612a(12) =282386a(13) =379036a(14) =498440a(15) =644218a(16) =819692a(17) =1028960a(18) =1275766a(19) =1564716a(20) =1899968a(21) =2286630a(22) =2729288a(23) =3233528a(24) =3804374a(25) =4447920a(26) =5169588a(27) =5975974a(28) =6872944a(29) =7867572