[seqfan] d(n) = d(n-1)*d(n-2) & d(n) = d(n+1)*d(n+2)
q1qq2qqq3qqqq at yahoo.com
Fri Feb 12 20:48:51 CET 2010
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) Those positive integers n such that d(n) = d(n+1)*d(n+2).
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