311850

Appears in sequences

• Triangle of coefficients of Bessel polynomials {y_n(x)}'.at n=25A065931
• Triangle of coefficients of Bessel polynomials {y_n(x)}''.at n=19A065943
• Triangle read by rows: T(n,k) is the number of set partitions of the set {1,2,...,n} containing k blocks of size 2 (0 <= k <= floor(n/2)).at n=46A124498
• The p(n) sequence that is associated with the Eta triangle A160464.at n=4A160473
• Sum of the "complements" of the integer partitions of n.at n=30A188814
• Denominators of coefficients in Taylor series expansion of log(cosec(x)*arcsin(x)).at n=5A202380
• Triangle T(n,k) giving number of degree-2n permutations which decompose into exactly k cycles of even length, k=0..n.at n=26A204420
• Greatest 7th-power-free divisor of n!.at n=10A248775
• a(n) is the least number with exactly n odd divisors that are <= sqrt(n).at n=32A334853