1948717

Appears in sequences

• a(n) = (11^(n+1) - 1)/10.at n=6A016123
• Cyclotomic polynomials at x=11.at n=7A019329
• Cyclotomic polynomials at x=-11.at n=14A020510
• Triangle of Gaussian binomial coefficients [ n,k ] for q = 11.at n=29A022175
• Number of sublattices of index n in generic 7-dimensional lattice.at n=10A038994
• a(n) = 1111111 in base n.at n=10A053716
• Z(S_m; sigma[1](n), sigma[2](n),..., sigma[m](n)) where Z(S_m; x_1,x_2,...,x_m) is the cycle index of the symmetric group S_m and sigma[k](n) is the sum of k-th powers of divisors of n; m=6.at n=10A068023
• a(n) = (11^n - 1)/(5*2^(3 - 2*(n mod 2))).at n=7A152435
• a(n) = Sum_{d|n} Moebius(n/d)*d^(b-1)/phi(n) for b = 8.at n=10A160897
• Square array T(n,k) read by antidiagonal upwards in which column k lists the partial sums of the powers of the k-th prime, n >= 0, k >= 1.at n=59A319076
• Irregular triangle read by rows: T(n, k) is the q-multinomial coefficient defined by the k-th partition of n in Abramowitz-Stegun order, evaluated at q = 11.at n=30A347492