Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 4, 7 or 8 king-move adjacent elements, with upper left element zero.
A316541
Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 4, 7 or 8 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =8a(1) =24a(2) =53a(3) =136a(4) =568a(5) =1874a(6) =5966a(7) =20721a(8) =70789a(9) =236314a(10) =800508a(11) =2719171a(12) =9182336a(13) =31042624a(14) =105124746a(15) =355650499a(16) =1202909216a(17) =4070383698a(18) =13772369477a(19) =46593368184a(20) =157641684416a(21) =533368598291
External references
- oeis: A316541