28242

Appears in sequences

• Determinant of the n X n matrix whose element (i,j) equals the floor( Phi^(i-j) + 1).at n=46A071784
• Smallest number a(n)>a(n-1) such that T(a(n-1))+T(a(n))=T(m) for some m, a(1)=3; T(i) are the triangular numbers.at n=33A072522
• a(n) = 2*A002532(n).at n=9A083694
• First n digits of 10^n!.at n=4A139543
• Number of (n+1) X 3 0..2 arrays with the number of clockwise edge increases in every 2 X 2 subblock unequal to the number of counterclockwise edge increases.at n=5A205817
• Number of (n+1) X 7 0..2 arrays with the number of clockwise edge increases in every 2 X 2 subblock unequal to the number of counterclockwise edge increases.at n=1A205821
• T(n,k) = number of (n+1) X (k+1) 0..2 arrays with the number of clockwise edge increases in every 2 X 2 subblock unequal to the number of counterclockwise edge increases.at n=22A205823
• T(n,k) = number of (n+1) X (k+1) 0..2 arrays with the number of clockwise edge increases in every 2 X 2 subblock unequal to the number of counterclockwise edge increases.at n=26A205823
• a(0) = 1; a(n) = Sum_{k=1..n} prime(k+1)*a(n-k).at n=7A292744
• Numbers k such that 2^k + 2*k + 1 is prime.at n=15A301634
• Number of vertex cuts in the hypercube graph Q_n.at n=4A362519
• Number of vertex cuts in the n X n torus grid graph.at n=1A362797