158760

Appears in sequences

• First row of spectral array W(sqrt(3/2)).at n=14A022163
• a(n) = 3rd elementary symmetric function of the first n+2 positive integers congruent to 1 mod 4.at n=5A024379
• Seventh column of triangle A075498.at n=3A075906
• Primal codes of canonical finite permutations on positive integers.at n=14A109299
• Triangle of bifactorial numbers, n B m = (2(n-m)-1)!! (2(n-1))!! / (2(n-m))!!, read by rows.at n=30A122774
• Triangle read by rows in which row n gives number of ways to partition n labeled elements into k pie slices allowing the pie to be turned over (n >= 1, 1 <= k <= n).at n=41A133800
• a(n) = 6*a(n-1) - 3*a(n-2), a(1) = 1, a(2) = 6.at n=7A138395
• Partition number array, called M31(6), related to A049374(n,m)= |S1(6;n,m)| (generalized Stirling triangle).at n=36A144356
• a(n) = product of decimal digits of A000043(n).at n=44A163821
• Triangle T(n,k) = k*binomial(n,k)*binomial(n-1,k) with T(n,0) = T(n,n) = 1, read by rows.at n=60A173881
• Triangle T(n,m)= binomial(n, m)/Beta(m + 1, n - m + 1) read by rows.at n=49A178343
• Triangle T(n,m)= binomial(n, m)/Beta(m + 1, n - m + 1) read by rows.at n=50A178343
• Sum of the cumulative sums of all the permutations of divisors of number n.at n=31A246916
• Diagonal of (1 - 9 x y) / ((1 - 3 y - 2 x + 3 y^2 + 9 x^2 y) * (1 - u - z - u z) * (1 - v - w)).at n=3A276015
• Triangle read by rows: T(n, k) is the Sheffer triangle ((1 - 4*x)^(-1/4), (-1/4)*log(1 - 4*x)). A generalized Stirling1 triangle.at n=41A290319
• Triangle read by rows, T(n, k) = Pochhammer(3, k)*Stirling2(3 + n, 3 + k) for n >= 0 and 0 <= k <= n.at n=24A294032
• Numbers with prime factorization Product_{k=1..w} prime(i_k) ^ e_k (where w = A001221(n) and prime(i) denotes the i-th prime number) such that i_k <> e_k for k = 1..w and { i_1, ..., i_w } = { e_1, ..., e_w }.at n=31A320252
• Numbers with exactly four distinct exponents in their prime factorization, or four distinct parts in their prime signature.at n=7A323025
• Square array T(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of g.f. 1/(1 - 2*k*x + k*x^2).at n=62A342133
• a(n) = largest sqrt(2*n)-smooth divisor of binomial(2*n, n).at n=41A361077