Number of n X 4 arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random 0..1 n X 4 array.
A217978
Number of n X 4 arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random 0..1 n X 4 array.
Terms
- a(0) =6a(1) =6a(2) =36a(3) =98a(4) =362a(5) =1180a(6) =4046a(7) =13594a(8) =46052a(9) =155494a(10) =525730a(11) =1776548a(12) =6004634a(13) =20293538a(14) =68587432a(15) =231806206a(16) =783444274a(17) =2647830256a(18) =8948960354a(19) =30245088582a(20) =102220312680a(21) =345477304222
External references
- oeis: A217978