Number of 3 X n 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,-1) and new values introduced in order 0..2.

A275267

Number of 3 X n 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,-1) and new values introduced in order 0..2.

Terms

    a(0) =5a(1) =24a(2) =128a(3) =688a(4) =3728a(5) =20224a(6) =109760a(7) =595744a(8) =3233600a(9) =17551552a(10) =95267648a(11) =517101184a(12) =2806762496a(13) =15234766720a(14) =82692468224a(15) =448844700928

External references