Number of n X 4 0..2 arrays with no element equal to any value at offset (-1,0) (0,-1) or (-2,-2) and new values introduced in order 0..2.
A274854
Number of n X 4 0..2 arrays with no element equal to any value at offset (-1,0) (0,-1) or (-2,-2) and new values introduced in order 0..2.
Terms
- a(0) =4a(1) =27a(2) =43a(3) =118a(4) =330a(5) =923a(6) =2585a(7) =7253a(8) =20368a(9) =57205a(10) =160656a(11) =451182a(12) =1267101a(13) =3558565a(14) =9994005a(15) =28067514a(16) =78825751a(17) =221376890a(18) =621722366a(19) =1746066251a(20) =4903711869a(21) =13771751157a(22) =38677054168a(23) =108621953977a(24) =305057588980a(25) =856734105714
External references
- oeis: A274854