%I #20 Mar 15 2020 16:17:21

%S 1,0,0,1,1,3,3,10,11,30,48,114,166,486,727,1643,3193,7619,12489,30781,

%T 52007,123418,248386,520902,909701,2349536,4417148,9055904,18451951,

%U 41215779,77052793,186393151,350380117,769533521

%N a(0) = 1 and a(n) = A309807(n) - A309807(n-1) for n > 0.

%C See A309807.

%o (Ruby)

%o def A(n)

%o (1..n).to_a.permutation.select{|i| (1..n - 1).all?{|j| i[j - 1] * (j + 1) > i[j] * j}}.size

%o end

%o def A332955(n)

%o a = (0..n).map{|i| A(i)}

%o [1] + (1..n).map{|i| a[i] - a[i - 1]}

%o end

%o p A332955(10)

%Y Cf. A309807.

%K nonn

%O 0,6

%A _Seiichi Manyama_, Mar 04 2020

%E a(23)-a(25) from _Giovanni Resta_, Mar 04 2020

%E a(26)-a(33) from _Bert Dobbelaere_, Mar 15 2020