28296

Appears in sequences

• Number of n-node rooted identity trees of height 7.at n=11A038091
• Product of sums of divisors and non-divisors.at n=29A066859
• Number of squares (of another matrix) in the group GL(2,Z_n) described in sequence A000252.at n=15A068516
• Signed array used for numerators of generating functions of the column sequences of array A090452.at n=53A091029
• Numbers k such that (3*2^k - 1)^2 - 2 is prime.at n=16A100911
• Least positive k such that k * [RSA-200]^n - 1 is prime, where RSA-200 is the 200 decimal digit RSA challenge number A391940(15).at n=32A108375
• Numbers of the form a^2 + b^3 equal to 1-almost-prime(m) + 2-almost-prime(m) + 2-almost-prime(n) + k-almost-prime(n).at n=7A113915
• Irregular triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having k white corners.at n=44A140711
• Determinant of the (n+1) X (n+1) matrix with (i,j)-entry equal to f(i+j) for all i,j = 0,...,n, where f(k) = A000172(k) is the k-th Franel number.at n=3A225776
• a(n) = n^3/3 - 7*n/3 + 4.at n=44A270809
• Number of shapes of left-leaning height-balanced AVL trees with n (inner) nodes.at n=34A296103
• a(n) = 2*a(n-1) - a(n-3) + 2*a(floor(n/2)) + 3*a(floor(n/3)) + ... + n*a(floor(n/n)), where a(0) = 1, a(1) = 2, a(2) = 3.at n=13A298409
• a(n) is the smallest nonnegative integer such that the sum of any eight ordered terms a(k), k<=n (repetitions allowed), is unique.at n=7A365304