383040

Appears in sequences

• Expansion of 1/((1-4x)(1-6x)(1-10x)).at n=5A019483
• Number of degree-n odd permutations of order exactly 6.at n=10A061139
• Triangle T(n, k) = n!*StirlingS2(n, k)/binomial(n, k), read by rows.at n=42A156815
• Triangle T(n, k) = (2*n+1)!! * 2^(floor((n-1)/2) + floor(k/2) + 1) * Beta(floor(n/2) + floor((k-1)/2) + 2, floor((n-1)/2) + floor(k/2) + 2), read by rows.at n=43A158868
• Coefficient triangle of the Hermite-Bell polynomials for power -2.at n=26A215216
• Composite numbers such that product_{i=1..k} (p_i/(p_i-1)) / sum_{i=1..k} (p_i/(p_i-1)) is an integer, where p_i are the k prime factors of n (with multiplicity).at n=27A227034
• Numbers other than prime powers divisible by the sum and the sum of squares of their prime divisors.at n=11A268417
• Highly composite numbers of class 5 (see comment in A275239).at n=30A275243
• a(n) is the smallest integer that has exactly n divisors whose decimal digits are in strictly decreasing order.at n=36A358100
• Numbers k with record values of the ratio A000005(k)/A246600(k) between the total number of divisors of k and the number of divisors d of k such that the bitwise OR of k and d is equal to k.at n=25A361937
• Terms of A363690 with a record number of divisors.at n=26A363692
• Triangle read by rows: T(n, k) = 2^n*Sum_{j=0..k} (-1)^(k - j)*binomial(k, j)* Pochhammer(j/2, n).at n=32A371025