285405120

Appears in sequences

• Numbers n such that uphi(uphi(n)) = n/2.at n=29A071008
• Sixth column (k=7) of array A090438 ((4,2)-Stirling2) divided by 48 = 4!*2.at n=3A091036
• a(n)=5*a(n-1)+a(n-2), n>2 ; a(0)=1, a(1)=4, a(2)=20 .at n=12A155181