5806080

Appears in sequences

• Triangle whose (i,j)-th entry is binomial(i,j)*2^(i-j)*12^j (with i, j >= 0).at n=32A038218
• Triangle whose (i,j)-th entry is binomial(i,j)*12^(i-j)*2^j.at n=31A038328
• a(n) = (2*n - 2)*n!.at n=9A052609
• a(n) = Product_{p prime} p^{ Sum_{k>=0} floor[(n-1)/((p-1)p^k)]}.at n=7A053657
• Sum of divisors of k such that k and k+1 have the same number and sum of divisors.at n=24A054005
• Duplicate of A053657.at n=7A075265
• Triangle read by rows: T(n,k) = 2^k * (n!/k!)*binomial(n-1,k-1).at n=37A086915
• a(n) = A092143(n)/n!.at n=13A092144
• Startorial numbers: product of initial digits of integers 1 through n.at n=22A109834
• Real part of a complex operation analogous to the factorials.at n=8A121627
• Triangle: No(x, n) = (2*n/x)*No(x, n - 1) + (-n/(n - 2))*No( x, n - 2) + Ceiling[(2*(n - 1)/((n - 2)))*Sin[(n - 1)*Pi/2]]/x; weighted by 2*x^(n + 1).at n=43A137384
• Triangle T(n, k) = (2*n+1)!! * 2^(1 + floor(n/2) + floor(k/2) + floor((k-1)/2)) * Beta(floor(n/2) + floor((k-1)/2) + 2, floor((n-1)/2) + floor(k/2) + 2), read by rows.at n=44A158867
• Denominators of coefficients in Taylor series expansion of log(cosec(x)*log(x+1)).at n=8A202379
• Denominators of coefficients in Taylor series expansion of log(cotan(x)*log(x+1)).at n=8A202619
• a(n) = lcm(1,2,...,n)*a(floor(n/2))^2 for n > 0, a(0) = 1.at n=9A230714
• Number of 2n X 2n addition squares in which every digram (s,s;), s' != s, appears once horizontally and once vertically.at n=3A238838
• Number of length n words on alphabet {0,1,2,3} which contain all 16 of the 2-letter strings of the alphabet.at n=1A244044
• Smallest number k such that the symmetric representation of sigma(k) has maximum width n for those k whose representation has nondecreasing width up to the diagonal.at n=19A250071
• Number of n X 2 arrays containing 2 copies of 0..n-1 with row sums equal.at n=9A268363
• Irregular triangle T(n,m), denominators of coefficients in a power/Fourier series expansion of the plane pendulum's exact time dependence.at n=17A274131