54612

Appears in sequences

• Numbers k such that 7*2^k - 3 is prime.at n=40A058593
• Values of m for which A075825(m) = 1.at n=9A075876
• a(n) = (5*4^n - 8)/6.at n=7A080675
• a(n) = (5*2^n + (-1)^n - 3)/3.at n=15A084170
• a(0)=2, a(1)=8, a(n) = a(n-1) + 2*a(n-2).at n=14A115102
• Number of cycles of length 3 in the queen graph associated with an n X n chessboard.at n=18A144298
• a(n) = (3*2^(n+1) - 8 - (-2)^n)/6.at n=15A176961
• Triangle read by rows: T(n,k) = number of squares and rectangles of area 2^(k-1) after 2^n stages in the toothpick structure of A139250, n>=1, k>=1, assuming the toothpicks have length 2.at n=37A211016
• Triangle read by rows: T(n,k) = number of squares and rectangles of area 2^(k-1) after 2^n stages in the toothpick structure of A139250, n>=1, k>=1, assuming the toothpicks have length 2.at n=47A211016
• Number of steps required by the Hwang-Deutsch merging algorithm.at n=28A260795
• Triangle read by rows: T(n,m) (n >= m >= 1) = number of line segments formed by drawing the lines connecting any two of the 2*(m+n) perimeter points of an m X n grid of squares.at n=51A331454
• a(n) = Sum_{k=1..n} gcd(k,n)^(n/gcd(k,n)).at n=23A342424
• Number of vertex cuts in the n-prism graph.at n=7A356830
• The number of possible values that can be obtained for the Shannon diversity index across all partitions of n.at n=50A383683