A006558: First group of n consecutive integers with same number of divisors

[hv at crypt.org]

hv at crypt.org wrote:
:To reduce duplication when checking around candidates of the form
:p^2.k, give up as soon as you see a neighbour divisible by prime q^2,
:19 <= q < p.

On second thoughts this is too radical: treat the found neighbour
the same as if it had the wrong number of divisiors, but don't give
up on the current p^2.k.

Hugo