login
a(n) = Sum_{k=0..n} k! * Sum_{d|n} phi(d) * A008284(n/d, k).
1

%I #5 Aug 25 2019 01:55:43

%S 1,1,4,11,40,165,930,6109,47364,416259,4092332,44424105,527512456,

%T 6798907261,94504292830,1408973416983,22426222792568,379522092608193,

%U 6804315178122972,128828842646944153,2568533750232696472,53788282243854348683,1180357162840669081094

%N a(n) = Sum_{k=0..n} k! * Sum_{d|n} phi(d) * A008284(n/d, k).

%Y Row sums of A327028.

%K nonn

%O 0,3

%A _Peter Luschny_, Aug 23 2019