Number of nX1 0..7 arrays with every element value z a city block distance of exactly z from another element value z.

A209216

Number of nX1 0..7 arrays with every element value z a city block distance of exactly z from another element value z.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =12a(4) =33a(5) =99a(6) =319a(7) =1079a(8) =3555a(9) =11300a(10) =35863a(11) =111731a(12) =352219a(13) =1103216a(14) =3517983a(15) =11225970a(16) =35689268a(17) =113349420a(18) =359442201a(19) =1137949882a(20) =3593078597a(21) =11345200954a(22) =35855116040a(23) =113443380209a(24) =358576231579

External references