154836

Appears in sequences

• a(n) = (6^n/n!) * Product_{k=0..n-1} ( 6*k + 11 ).at n=3A004998
• a(n) = (2n+1)*(2n+2)*(2n+6)*(2n+7).at n=8A069080
• a(n) = n*(n+1)*(2n+1)*(3n+1)*(4n+1)/30.at n=11A094323
• Number of (w,x,y,z) with all terms in {1,...,n} and w<=2x and y<=3z.at n=22A212513
• Numbers k such that the central binomial coefficient C(2*k,k) is divisible by k^3.at n=1A282163
• Least number m > 1 such that the central binomial coefficient C(2m,m) is divisible by m^n.at n=2A282346
• Number of quadrilateral regions in an equilateral triangular "frame" of size n (see Comments in A328526 for definition).at n=27A333033