Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A301321
Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =32a(1) =383a(2) =735a(3) =1709a(4) =3649a(5) =7600a(6) =15802a(7) =33150a(8) =70311a(9) =150532a(10) =324443a(11) =702447a(12) =1525146a(13) =3317041a(14) =7221520a(15) =15731216a(16) =34280366a(17) =74716439a(18) =162869203a(19) =355053284a(20) =774048171a(21) =1687544827a(22) =3679181851a(23) =8021454454a(24) =17488766770a(25) =38130129567
External references
- oeis: A301321