87846

Appears in sequences

• a(n) = n*(n-1)^4/2.at n=12A019583
• Triangle read by rows whose (i,j)-th entry is binomial(i,j)*11^(i-j)*11^j.at n=12A038325
• The terms of A073211 (sums of two powers of 11) divided by 2.at n=19A073219
• a(1) = 2, thereafter a(n) = Sum_{k=1..n-1} floor(a(n-k)/k).at n=26A100483
• Numbers of the form (6^i)*(11^j), with i, j >= 0.at n=21A108698
• Number of 2 X 2 matrices with all elements in {0,1,...,n} and odd determinant.at n=21A210370
• Number of 2 X 2 matrices having all terms in {1,...,n} and odd determinant.at n=21A211065
• Triangle read by rows: coefficients T(n,k) of a binomial decomposition of n as Sum(k=0..n)T(n,k)*binomial(n,k).at n=27A244142
• Triangle read by rows: terms T(n,k) of a binomial decomposition of n as Sum(k=0..n)T(n,k).at n=27A244143
• Number of permutations of n elements divided by the number of 10-ary heaps on n+1 elements.at n=55A273738
• Numbers m > 2 such that every divisor > 2 is the sum of two or more consecutive divisors.at n=12A290582
• Triangle T read by rows: T(n, k) = k*n^(n-k-1) with 0 < k < n.at n=50A338280
• Primitive terms of A051487.at n=32A346694