24360

Appears in sequences

• Order of the group SL(2,Z_n).at n=28A000056
• Number of 2-factors in P_5 X P_2n.at n=3A003776
• a(n) = n*(n-1)*(n-2) (or n!/(n-3)!).at n=30A007531
• a(n) = floor( n*(n-1)*(n-2)*(n-3)/27 ).at n=30A011937
• a(n) = floor(n*(n-1)*(n-2)*(n-3)/31).at n=31A011941
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 13.at n=11A031691
• a(n) = 3*n*(3*n-1)*(3*n-2).at n=10A054776
• Coefficients of polynomials (n-1)!*P(n,k), P(n,k) = Sum_{i=0..n} Stirling2(n,i)*binomial(k+i-1,k).at n=20A059604
• Period of the continued fraction for sqrt(2^(2n+1)).at n=15A059927
• a(n) = lcm(6n+2, 6n+4, 6n+6).at n=9A061506
• Order of commutator subgroup of GL(2,Z_n) (invertible 2 X 2 matrices mod n: A000252).at n=28A065430
• a(n) = (2*n+2)*(2*n+3)*(2*n+4) = 24*A000330(n+1).at n=13A069074
• The q expansion of Lambda^5, a Hauptmodul for Gamma_1(5).at n=27A078905
• Number of conjugacy classes in the group GL(3,Z_n).at n=28A086768
• Numbers that can be expressed as the difference of the squares of primes in exactly eleven distinct ways.at n=3A092007
• a(n) = sigma_3(n) - sigma_1(n).at n=28A092348
• Number of Pythagorean quadruples mod n; i.e., number of solutions to w^2 + x^2 + y^2 = z^2 mod n.at n=29A096018
• Largest denominator used in the Egyptian fraction representation of n/(n + 1) by the greedy algorithm.at n=27A100695
• Triangle read by rows: T(n,k) = n!*Pell(n-k+1)/k!, where Pell(n)=A000129(n).at n=31A110327
• Numbers k such that k^2 is a palindrome when written in base 17.at n=39A118651