A241095 a(n) = (5^n - 1)^n.

1, 4, 576, 1906624, 151613669376, 297546691796890624, 14546328186912540283109376, 17761976839391142146587243652890624, 542089984111981439129333008468155364987109376, 413588400456285638417956135979678948104381423950212890624

Offset: 0

Author

Hannah Ko, Apr 15 2014

Keywords

• nonn

Comments

Number of n X n {-2,-1,0,1,2} matrices with no zero rows.

Crossrefs

Cf. A055601, A060613, A240091.

Programs

Mathematica

Join[{1},Table[(5^n-1)^n,{n,10}]] (* Harvey P. Dale, May 24 2023 *)

Extensions

More terms from Alois P. Heinz, Apr 23 2014