541200

Appears in sequences

• a(n) = denominator of Bernoulli(2n)/(2n).at n=19A006953
• Number of points of L1 norm 4 in cubic lattice Z^n.at n=30A035598
• Coordination sequence for 30-dimensional cubic lattice.at n=4A035725
• Coordination sequence for C_30 lattice.at n=2A035767
• Coordination sequence for lattice D*_30 (with edges defined by l_1 norm = 1).at n=4A035800
• Coordination sequence for diamond structure D^+_30. (Edges defined by l_1 norm = 1.)at n=4A035891
• a(n) = n*(n+1)*(n^2+1)/2.at n=32A071237
• Denominators from e.g.f. 1/(1-exp(-x)) - 1/x.at n=39A075180
• Number of cases in which the first player is killed in a Russian roulette game where 5 players use a gun with n chambers and the number of bullets can be from 1 to n. Players do not rotate the cylinder after the game starts.at n=19A119610
• n*A027642(n).at n=40A164869
• First bisection of A164869.at n=20A164877
• For odd n, a(n) = 2; for even n, a(n) = denominator of Bernoulli(n)/n; The number 2 alternating with the elements of A006953.at n=39A185633
• For successive terms of A002202, totient values t, lcm({x: phi(x)=t})/gcd({x: phi(x)=t}).at n=31A317013