810810

Appears in sequences

• Triangle of coefficients of Bessel polynomials {y_n(x)}'.at n=26A065931
• Triangle of coefficients of Bessel polynomials {y_n(x)}''.at n=20A065943
• Numbers with exactly 6 distinct prime divisors {2,3,5,7,11,13}.at n=23A147573
• Numbers with prime factorization pqrstu^4.at n=21A190388
• Number of near-matchings on the complete graph over 2n+1 vertices.at n=5A200142
• Govindarajan's triangle C^{box 2} arising in enumeration of multi-dimensional partitions, read by rows.at n=62A216805
• a(n) = binomial(n+1,2)*n!/n!!.at n=11A293656
• Triangle read by rows in which row n gives coefficients of polynomial f_n(x) of degree less than n that satisfies Integral_{x=0..1} g(t - x) * f_n(x) dx = g(t) for any polynomial g(x) of degree less than n.at n=40A303699
• Triangle read by rows: T(n,k) is the number of chiral pairs of colorings of the facets of a regular n-dimensional orthotope using exactly k colors. Row n has 2n columns.at n=54A325010
• Number of minimum edge covers of the complete graph K_n.at n=12A351990
• a(n) is the least number k that has exactly n divisors <= sqrt(k) of the form 4*j+3.at n=23A379683