Number of n X 2 0..1 arrays with no element unequal to more than four of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
A281982
Number of n X 2 0..1 arrays with no element unequal to more than four of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =0a(1) =0a(2) =2a(3) =16a(4) =88a(5) =432a(6) =2008a(7) =8992a(8) =39200a(9) =167552a(10) =705440a(11) =2934784a(12) =12091264a(13) =49416448a(14) =200598912a(15) =809606656a(16) =3251253760a(17) =12999782400a(18) =51779385856a(19) =205542608896a(20) =813446920192
External references
- oeis: A281982