Number of n X 2 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random 0..1 n X 2 array.
A218078
Number of n X 2 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random 0..1 n X 2 array.
Terms
- a(0) =2a(1) =4a(2) =8a(3) =18a(4) =38a(5) =82a(6) =176a(7) =378a(8) =812a(9) =1744a(10) =3746a(11) =8046a(12) =17282a(13) =37120a(14) =79730a(15) =171252a(16) =367832a(17) =790066a(18) =1696982a(19) =3644946a(20) =7828976a(21) =16815850a(22) =36118748a(23) =77579424a(24) =166632770a(25) =357910366a(26) =768755330a(27) =1651208832a(28) =3546629858a(29) =7617802852
External references
- oeis: A218078