Half the number of 0..6 arrays of length n+2 with second differences nonzero.

A212780

Half the number of 0..6 arrays of length n+2 with second differences nonzero.

Terms

    a(0) =159a(1) =1034a(2) =6724a(3) =43727a(4) =284360a(5) =1849215a(6) =12025596a(7) =78203437a(8) =508563345a(9) =3307229006a(10) =21507180645a(11) =139862954332a(12) =909540228150

External references