From higher-order arithmetic progressions.
A259457
From higher-order arithmetic progressions.
Terms
- a(0) =3a(1) =66a(2) =1050a(3) =15300a(4) =220500a(5) =3245760a(6) =49533120a(7) =789264000a(8) =13172544000a(9) =230519520000
External references
- oeis: A259457