171576

Appears in sequences

• Number of permutations on n letters that have only cycles of length 3 or less.at n=10A057693
• Numbers D such that D^2 = A^3 + B^4 + C^5 has more than one solution in positive integers (A, B, C).at n=33A256603
• Number of nXnXn triangular 0..4 arrays with some element plus some adjacent element totalling 4+1 or 4-1 exactly once.at n=3A270602
• T(n,k)=Number of nXnXn triangular 0..k arrays with some element plus some adjacent element totalling k+1 or k-1 exactly once.at n=24A270606
• Number of 4X4X4 triangular 0..n arrays with some element plus some adjacent element totalling n+1 or n-1 exactly once.at n=3A270609
• Least integer k such that k/2^n > phi^2, where phi = (1+sqrt(5))/2 = golden ratio.at n=16A293320
• Triangle read by rows: T(n,k) is the number of permutations in S_n for which all cycles have length <= k.at n=47A330858