118484

Appears in sequences

• One-half the number of permutations of length n with exactly 4 rising or falling successions.at n=10A001268
• Triangle read by rows: T(n,k) is one-half the number of permutations of length n with exactly n-k rising or falling successions, for n >= 1, 1 <= k <= n. T(1,1) = 1 by convention.at n=50A010028
• Base 6 digits are, in order, the first n terms of the periodic sequence with initial period 2,3,1.at n=6A037641
• Triangle read by rows: T(n,k) = one-half number of permutations of length n with exactly k rising or falling successions, for n >= 1, 0 <= k <= n-1. T(1,0) = 1 by convention.at n=49A086856
• a(n) = Sum_{k=0..n} (-1)^(n-k) * k! * k^(k*n) * Stirling1(n,k).at n=3A351138