105780

Appears in sequences

• a(n) = floor( n*(n-1)*(n-2)*(n-3)/28 ).at n=43A011938
• McKay-Thompson series of class 30E for Monster.at n=47A058616
• Coefficient of x in the reduction by x^2 -> x+1 of the polynomial p(n,x) defined at Comments.at n=20A192959