Number of nX5 0..4 arrays with each element equal to the number its horizontal and vertical neighbors within one of itself.

A196014

Number of nX5 0..4 arrays with each element equal to the number its horizontal and vertical neighbors within one of itself.

Terms

    a(0) =1a(1) =3a(2) =13a(3) =27a(4) =106a(5) =316a(6) =835a(7) =2350a(8) =7232a(9) =21846a(10) =63985a(11) =186029a(12) =548387a(13) =1625398a(14) =4800819a(15) =14129048a(16) =41608725a(17) =122724222a(18) =362055916a(19) =1067475979a(20) =3146535362a(21) =9276448225a(22) =27352573231a(23) =80649512515a(24) =237779505381a(25) =701041117758

External references