Number of nX6 0..1 arrays with every element equal to 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

A298658

Number of nX6 0..1 arrays with every element equal to 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =5a(1) =49a(2) =34a(3) =173a(4) =431a(5) =1116a(6) =2562a(7) =6711a(8) =17405a(9) =48462a(10) =125671a(11) =334571a(12) =901387a(13) =2398458a(14) =6398293a(15) =17158639a(16) =45911441a(17) =122885609a(18) =329214517a(19) =881849126a(20) =2361859125a(21) =6328533398a(22) =16955926709a(23) =45429854362a(24) =121730159805a(25) =326179436515

External references