Number of length n+1 0..2*1 arrays with the sum of the absolute values of adjacent differences equal to n*1.

A249975

Number of length n+1 0..2*1 arrays with the sum of the absolute values of adjacent differences equal to n*1.

Terms

    a(0) =4a(1) =10a(2) =20a(3) =64a(4) =136a(5) =466a(6) =1012a(7) =3580a(8) =7864a(9) =28340a(10) =62696a(11) =228700a(12) =508400a(13) =1870466a(14) =4172660a(15) =15449740a(16) =34557400a(17) =128583340a(18) =288212440a(19) =1076603824a(20) =2417218544a(21) =9058241620a(22) =20366034760a(23) =76521687304a(24) =172247070064a(25) =648634854904

External references