Number of nX1 0..6 arrays with every element value z a city block distance of exactly z from another element value z.

A209051

Number of nX1 0..6 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) =980a(8) =2966a(9) =8776a(10) =26196a(11) =77510a(12) =234031a(13) =708205a(14) =2132677a(15) =6421621a(16) =19225005a(17) =57566221a(18) =172152197a(19) =515505478a(20) =1541863101a(21) =4618183861a(22) =13838387169a(23) =41464367959a(24) =124065165161a(25) =371090483661

External references