A347569 - cp's OEIS frontend

A347569 Number of ways 1/n can be expressed as the sum of six distinct unit fractions: 1/n = 1/p + 1/q + 1/r + 1/s + 1/t + 1/u, with 0 < p < q < r < s < t < u.

%I A347569 #25 Oct 17 2021 15:47:00
%S A347569 2320,244817,3421052,18420699,64025680,131223239,431008820,681922142
%N A347569 Number of ways 1/n can be expressed as the sum of six distinct unit fractions: 1/n = 1/p + 1/q + 1/r + 1/s + 1/t + 1/u, with 0 < p < q < r < s < t < u.
%Y A347569 Cf. A002966, A073546, A227610, A241883, A347566.
%K A347569 nonn,hard,more
%O A347569 1,1
%A A347569 _Jud McCranie_, Sep 06 2021
%E A347569 a(7) and a(8) from _Jud McCranie_, Oct 15 2021

cp's OEIS Frontend

A347569 Number of ways 1/n can be expressed as the sum of six distinct unit fractions: 1/n = 1/p + 1/q + 1/r + 1/s + 1/t + 1/u, with 0 < p < q < r < s < t < u.