Number of length n+1 0..4 arrays with the sum of the minimum of each adjacent pair multiplied by some arrangement of +-1 equal to zero.
A250415
Number of length n+1 0..4 arrays with the sum of the minimum of each adjacent pair multiplied by some arrangement of +-1 equal to zero.
Terms
- a(0) =9a(1) =65a(2) =205a(3) =1351a(4) =5982a(5) =34415a(6) =169352a(7) =904695a(8) =4547008a(9) =23448029a(10) =117953499a(11) =598260521a(12) =3002881031a(13) =15113176921a(14) =75724031785a(15) =379750748041
External references
- oeis: A250415