Number of n X 7 0..1 arrays with every element unequal to 0, 1, 5 or 8 king-move adjacent elements, with upper left element zero.

A304269

Number of n X 7 0..1 arrays with every element unequal to 0, 1, 5 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =21a(1) =23a(2) =67a(3) =259a(4) =1074a(5) =3788a(6) =13767a(7) =53839a(8) =201274a(9) =741275a(10) =2806825a(11) =10575217a(12) =39423977a(13) =147990910a(14) =556562343a(15) =2084799226a(16) =7816395336a(17) =29347218029a(18) =110071768648a(19) =412764006652

External references