Number of (n+1) X (1+1) 0..3 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with values 0..3 introduced in row major order.
A231356
Number of (n+1) X (1+1) 0..3 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with values 0..3 introduced in row major order.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =12a(4) =33a(5) =102a(6) =329a(7) =1075a(8) =3622a(9) =12298a(10) =42132a(11) =145145a(12) =501380a(13) =1735895a(14) =6017101a(15) =20873202a(16) =72444888a(17) =251507292a(18) =873325097a(19) =3032847106a(20) =10533086197a(21) =36583055791a(22) =127062078054a(23) =441325714766
External references
- oeis: A231356