Number of -n..n arrays x(0..5) of 6 elements with zero sum and no two or three adjacent elements summing to zero.

A200433

Number of -n..n arrays x(0..5) of 6 elements with zero sum and no two or three adjacent elements summing to zero.

Terms

    a(0) =0a(1) =212a(2) =2232a(3) =11008a(4) =36952a(5) =98052a(6) =221984a(7) =448224a(8) =830160a(9) =1437204a(10) =2356904a(11) =3697056a(12) =5587816a(13) =8183812a(14) =11666256a(15) =16245056a(16) =22160928a(17) =29687508a(18) =39133464a(19) =50844608a(20) =65206008a(21) =82644100a(22) =103628800a(23) =128675616a(24) =158347760a(25) =193258260

External references