859320

Appears in sequences

• Triangle of number of permutations of {1, 2, ..., n} having exactly k cycles, each of which is of length >=r for r=3.at n=17A050211
• Least common multiple of the digit reversals of the first n natural numbers.at n=12A109935
• Numbers k such that S(S(k))=k, with S(n)=sigma(n)/4: 1/4-sociable numbers of order 1 or 2.at n=2A113286
• Conjectured list of smallest members of fully k-sociable cycles of order r.at n=29A183026
• Numbers with prime factorization pqrst^2u^3.at n=16A190390
• Irregular triangle read by rows: coefficients of polynomials arising in calculation of squares of certain web-coloring matrices.at n=43A281351