23360

Appears in sequences

• Smallest number such that n-th iterate of Chowla function is 0.at n=24A002954
• a(n) = (6^n + 2^n)/2.at n=6A081335
• In the interior of a regular 2n-gon with all diagonals drawn, the number of points where exactly three diagonals intersect.at n=30A101363
• Terms of A061047 ending in 0.at n=29A146950
• Positive integers with the property that if the base-3 representation is reversed the result is twice the original number.at n=8A173951
• Number of And/Or trees with n internal nodes that compute the Boolean value True.at n=4A181914
• Number of n X n symmetric (0,1)-matrices containing four ones.at n=15A185355
• Number of n X n binary matrices having a contiguous 2 by 2 submatrix whose every element is 1.at n=4A255936
• Positive integers whose square is the sum of 73 consecutive squares.at n=1A257824
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 603", based on the 5-celled von Neumann neighborhood.at n=27A273173
• Numbers n such that A048720(n, A065621(n)) is a perfect square, but n is not in A023758.at n=15A277807
• Areas of triangles associated with tribonacci sequence.at n=3A289668
• Number of cyclic subgroups of the group (C_n)^n, where C_n is the cyclic group of order n.at n=5A344201
• Number of cyclic subgroups of the group (C_n)^6, where C_n is the cyclic group of order n.at n=5A344302
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = Sum_{j=0..floor(n/2)} k^(n-j) * binomial(n,2*j).at n=61A361432
• The smallest number k such that the equation phi(phi(x)) = k has exactly n solutions.at n=44A378507
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of e.g.f. B(x)^k, where B(x) is the e.g.f. of A384984.at n=40A384987