Number of prime 3-ary toroidal arrays with 2 rows and n columns.
A291076
Number of prime 3-ary toroidal arrays with 2 rows and n columns.
Terms
- a(0) =3a(1) =18a(2) =116a(3) =810a(4) =5880a(5) =44220a(6) =341484a(7) =2690010a(8) =21522228a(9) =174336264a(10) =1426403748a(11) =11767874940a(12) =97764009000a(13) =817028131140
External references
- oeis: A291076