Omit the trailing 5 from double factorial of odd numbers (A001147(n)).

A358987

Omit the trailing 5 from double factorial of odd numbers (A001147(n)).

Terms

    a(0) =1a(1) =1a(2) =3a(3) =1a(4) =10a(5) =94a(6) =1039a(7) =13513a(8) =202702a(9) =3445942a(10) =65472907a(11) =1374931057a(12) =31623414322a(13) =790585358062

External references