[seqfan] A001353

[Don Reble]

Seqfans:

> %C A001353 This sequence generates many brilliant (A078972) numbers...
> Is this a prime-free sequence?

    It's prime-free.
    A001353(2n) is even and composite.
    A001353(2n+1) = A001834(n) * A079935(n-1), either 1*1 or composite.

    (One could change the offset of A079935, but then many comments
     would be wrong. Unless they're already assuming offset zero. )-:

-- 
Don Reble  djr at nk.ca