T(n,k)=Number of length n+2 0..k arrays with the sum of second differences multiplied by some arrangement of +-1 equal to zero.

A250561

T(n,k)=Number of length n+2 0..k arrays with the sum of second differences multiplied by some arrangement of +-1 equal to zero.

Terms

    a(0) =2a(1) =5a(2) =8a(3) =8a(4) =25a(5) =14a(6) =13a(7) =60a(8) =83a(9) =32a(10) =18a(11) =117a(12) =302a(13) =297a(14) =62a(15) =25a(16) =200a(17) =761a(18) =1516a(19) =989a(20) =128a(21) =32a(22) =321a(23) =1648a(24) =5105a(25) =7126a(26) =3113a(27) =254a(28) =41a(29) =480

External references