Number of n X 5 0..1 arrays with rows and columns unimodal.

Terms

a(0) =16a(1) =256a(2) =2582a(3) =17594a(4) =89630a(5) =367216a(6) =1271969a(7) =3857481a(8) =10504174a(9) =26169386a(10) =60506898a(11) =131289614a(12) =269716032a(13) =528358366a(14) =992720569a(15) =1797620937a(16) =3149899316a(17) =5359276060a(18) =8879561670a(19) =14362835354a(20) =22729680458a(21) =35259087700a(22) =53702216265