[seqfan] Re: d(n) = d(n-1)*d(n-2) & d(n) = d(n+1)*d(n+2)
Richard Guy
rkg at cpsc.ucalgary.ca
Fri Feb 12 21:30:55 CET 2010
3375 can go in the first. R.
On Fri, 12 Feb 2010, Leroy Quet wrote:
> Could someone calculate a few terms of these sequences, please? Are they in the EIS yet?
>
> 1) Those integers n, n>=3, such that d(n) = d(n-1)*d(n-2), where d(n) is the number of divisors of n.
>
> 3,24,..
>
> 3) Those positive integers n such that d(n) = d(n+1)*d(n+2).
>
> 96,...
>
> Thanks,
> Leroy Quet
>
> [ ( [ ([( [ ( ([[o0Oo0Ooo0Oo(0)oO0ooO0oO0o]]) ) ] )]) ] ) ]
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