1372160

Appears in sequences

• Number of permutations of 1..n arranged in a circle with exactly 4 local maxima.at n=10A159712
• Triangle read by rows: T(n,k) (n>=0, 0<=k<=floor(n/2)) is the number of permutations of n and k valleys (considered cyclically).at n=34A263789
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 966", based on the 5-celled von Neumann neighborhood.at n=20A290833
• a(n) is the first number k with n prime divisors such that, if m is the next number with n prime divisors, k + m and k - m also have n prime divisors. In each case the divisors are counted with multiplicity.at n=12A365834