Number of length 4+2 0..n arrays with the sum of medians of adjacent triples multiplied by some arrangement of +-1 equal to zero.

A253132

Number of length 4+2 0..n arrays with the sum of medians of adjacent triples multiplied by some arrangement of +-1 equal to zero.

Terms

    a(0) =40a(1) =393a(2) =2058a(3) =7257a(4) =19990a(5) =46945a(6) =98124a(7) =187593a(8) =335106a(9) =566597a(10) =915078a(11) =1423385a(12) =2144128a(13) =3140689a(14) =4491642a(15) =6289609a(16) =8642310a(17) =11679353a(18) =15549300a(19) =20420721a(20) =26492194a(21) =33986741a(22) =43152838a(23) =54278609a(24) =67682648a(25) =83714937a(26) =102776362

External references