Number of length 2+5 0..n arrays with every six consecutive terms having two times the sum of some two elements equal to the sum of the remaining four.
A249087
Number of length 2+5 0..n arrays with every six consecutive terms having two times the sum of some two elements equal to the sum of the remaining four.
Terms
- a(0) =22a(1) =243a(2) =1944a(3) =8805a(4) =28366a(5) =84067a(6) =202628a(7) =429069a(8) =859390a(9) =1571551a(10) =2675332a(11) =4423193a(12) =6941954a(13) =10445275a(14) =15438956a(15) =22078997a(16) =30718938a(17) =42223499a(18) =56770760a(19) =74848061a(20) =97861362a(21) =125898023a(22) =159689464a(23) =201241105a(24) =250580166a(25) =308596907
External references
- oeis: A249087