Number of n X 4 0..1 arrays with every element unequal to 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

A305178

Number of n X 4 0..1 arrays with every element unequal to 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =2a(1) =1a(2) =9a(3) =10a(4) =13a(5) =47a(6) =71a(7) =118a(8) =241a(9) =453a(10) =870a(11) =1608a(12) =3110a(13) =6075a(14) =11491a(15) =22105a(16) =42831a(17) =82321a(18) =158514a(19) =305836a(20) =589983a(21) =1137829a(22) =2194384a(23) =4234349a(24) =8170446a(25) =15762684a(26) =30415495a(27) =58692610a(28) =113253536a(29) =218539740

External references