Number of length n+1 0..3 arrays with the sum of the maximum of each adjacent pair multiplied by some arrangement of +-1 equal to zero.
A250641
Number of length n+1 0..3 arrays with the sum of the maximum of each adjacent pair multiplied by some arrangement of +-1 equal to zero.
Terms
- a(0) =1a(1) =36a(2) =44a(3) =476a(4) =1424a(5) =7696a(6) =28238a(7) =126482a(8) =491943a(9) =2059700a(10) =8161068a(11) =33268124a(12) =132637221a(13) =534771362a(14) =2136620867a(15) =8574987528a(16) =34285733053a(17) =137334914170a(18) =549255340746
External references
- oeis: A250641