66096

Appears in sequences

• Base 5 digital convolution sequence.at n=15A033642
• a(n) = 6^n*(n^2 - n + 72)/72.at n=6A081912
• a(0) = 1; a(n) = n^(n-1)(3n-1)/2 (n>0).at n=6A081918
• Triangle read by rows: T(n,k) is the number of permutations p of [n] such that the length of the longest 2-stack sortable initial segment of p is equal to k.at n=41A094785
• Numbers with prime factorization pq^4r^5.at n=12A190468
• Number of positions (cyclic permutations) of circular permutations with exactly one (unspecified) increasing or decreasing modular 3-sequence, with clockwise and counterclockwise traversals counted as distinct.at n=8A235942
• Number a(n,k) of positions (cyclic permutations) of circular permutations of [n] with exactly k (unspecified) increasing or decreasing modular runs (3-sequences), with clockwise and counterclockwise traversals counted as distinct; triangle a(n,k) read by rows, 0<=k<=n.at n=46A235943
• Number of (n+2) X (2+2) 0..1 arrays with every 2 X 2 and 3X3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally and vertically.at n=28A253504
• Cyclops numbers with circular digits {0,6,8,9}.at n=16A274765
• Number of senary sequences of length n such that no two consecutive terms have distance 2.at n=7A287807
• Numbers with an even number of prime factors (counted with multiplicity) that can be factored into squarefree semiprimes (A320911) but cannot be factored into distinct semiprimes (A320892).at n=22A320893