Number of nX7 0..4 arrays with each element equal to the number its horizontal and vertical neighbors unequal to itself.

A195961

Number of nX7 0..4 arrays with each element equal to the number its horizontal and vertical neighbors unequal to itself.

Terms

    a(0) =1a(1) =21a(2) =82a(3) =105a(4) =92a(5) =410a(6) =945a(7) =1919a(8) =4478a(9) =10274a(10) =27467a(11) =73240a(12) =184074a(13) =475431a(14) =1290711a(15) =3500703a(16) =9203789a(17) =24842074a(18) =67959738a(19) =185261546a(20) =500164424a(21) =1364785665a(22) =3747581211a(23) =10238569012a(24) =27972042011a(25) =76776169280a(26) =210809165289

External references