23564

Appears in sequences

• Numbers k such that 297*2^k + 1 is prime.at n=24A053365
• Number of polyhexes with n cells that tile the plane isohedrally but not by translation or by 180-degree rotation (Conway criterion).at n=12A075213
• a(n) = Sum_{k=0..floor(n/2)} binomial(n,k)*2^(n-2*k).at n=11A100067
• Trace of the n-th power of a certain 8X8 adjacency matrix.at n=6A141384
• Number of n-node rooted identity trees with thinning limbs and root outdegree (branching factor) 10.at n=6A245129
• Number of n X n 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.at n=5A280063
• Number of nX6 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.at n=5A280067
• T(n,k)=Number of nXk 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.at n=60A280069
• Expansion of Product_{k>=1} ((1 + x^(2*k)) / (1 - x^k))^k.at n=16A285462
• Number of partitions of n^4 into fourth powers > 1.at n=11A298989
• a(n) = time to the nearest second at the n-th instant (n>=0) when the hour and minute hands on a clock face coincide, starting at time 0:00.at n=6A335789