18966

Appears in sequences

• Expansion of 1/((1-7x)(1-9x)(1-11x)(1-12x)).at n=3A028227
• a(n) = floor( n^Pi ).at n=22A061294
• Indices k such that A019326(k)=Phi[k](8) is prime, where Phi is a cyclotomic polynomial.at n=32A138938
• Number of distinct solutions of sum{i=1..4}(x(2i-1)*x(2i)) = 1 (mod n), with x() only in 1..n-1.at n=9A180786
• Periods associated with A217611.at n=35A217646
• Number of 0..n arrays of length 6 with each element differing from at least one neighbor by 1 or less, starting with 0.at n=30A221685
• Number of length n+4 0..5 arrays with no pair in any consecutive five terms totalling exactly 5.at n=2A246734
• T(n,k)=Number of length n+4 0..k arrays with no pair in any consecutive five terms totalling exactly k.at n=23A246737
• Number of length 3+4 0..n arrays with no pair in any consecutive five terms totalling exactly n.at n=4A246740
• Not appropriate for the OEIS.at n=6A248690
• Number of length n+6 0..3 arrays with no seven consecutive terms having the maximum of any two terms equal to the minimum of the remaining five terms.at n=1A250054
• T(n,k)=Number of length n+6 0..k arrays with no seven consecutive terms having the maximum of any two terms equal to the minimum of the remaining five terms.at n=7A250059
• Number of length 2+6 0..n arrays with no seven consecutive terms having the maximum of any two terms equal to the minimum of the remaining five terms.at n=2A250061
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 118", based on the 5-celled von Neumann neighborhood.at n=36A270187
• Total number of vertices formed by intersections among sides and straight "chords" in a right triangle when each side is divided by vertices into n equal segments.at n=11A274585
• Number of essentially parallel achiral series-parallel networks with n elements and without multiple unit elements in parallel.at n=17A339292