%N Number of values of k such that prime(n) divides A241601(k).
%C a(n) is called the weak irregular index of n-th prime, that is, the Bernoulli irregular index + Euler irregular index.
%C Prime(n) is a regular prime if and only if a(n) = 0.
%C Does every natural number appear in this sequence? For example, for the primes 491 and 1151, a(94) = a(190) = 4. (491 and 1151 are the only primes below 1800 with weak irregular index 4 or more.) However, does a(n) have a limit?
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/IrregularPair.html">Irregular Pair</a>
%e a(8) = 1 since the 8th prime is 19, which divides A241601(11).
%e a(13) = 0 since the 13th prime is 41, a regular prime.
%e a(19) = 2 since the 19th prime is 67, which divides both A241601(27) and A241601(58).
%Y Cf. A091888, A091887, A250216, A000928, A120337, A128197, A250213.
%A _Eric Chen_, Dec 26 2014