60996domain: NAppears in sequencesDegrees of irreducible representations of Fischer group Fi23.at n=6A003914Number of regions in regular n-gon which are quadrilaterals (4-gons) when all its diagonals are drawn.at n=42A067151a(n) = (n+1)^2*(n+2)*(5*n^2 + 15*n + 12)/24.at n=11A108676a(n) = 169*n^2 - 13.at n=18A158550