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

A253130

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

Terms

    a(0) =12a(1) =53a(2) =152a(3) =345a(4) =676a(5) =1197a(6) =1968a(7) =3057a(8) =4540a(9) =6501a(10) =9032a(11) =12233a(12) =16212a(13) =21085a(14) =26976a(15) =34017a(16) =42348a(17) =52117a(18) =63480a(19) =76601a(20) =91652a(21) =108813a(22) =128272a(23) =150225a(24) =174876a(25) =202437a(26) =233128a(27) =267177a(28) =304820a(29) =346301

External references