38808

Appears in sequences

• (Product of 3 successive Catalan numbers)/2.at n=4A014231
• High-temperature coefficients for internal energy for spin-1/2 Ising model on f.c.c. lattice.at n=5A047712
• Triangle read by rows, T(n, k) = binomial(n, k)*binomial(n + 2, k).at n=51A062196
• Numbers n such that A001414(n) = sum of composites from the smallest prime factor of n to the largest prime factor of n.at n=18A074053
• Central coefficients of Moebius polynomials (A074586): coefficient of x^(n/2-1/2) if n is odd; coefficient of x^(n/2-1) if n is even and >4. The n-th Moebius polynomial, M(n,x), satisfies M(n,-1)=mu(n) the Moebius function of n.at n=16A077596
• Sum(prime(k),k=1..n)^2-1.at n=11A092780
• a(n) = C(n+3,3) * C(n+5,5).at n=6A105946
• Number of compositions of n with exactly 4 adjacent equal parts.at n=14A106360
• a(n) = binomial(n+6, 6) * binomial(n+8, 6).at n=3A107397
• Number of throws of a fair die to reach a probability of at least 0.5 (50%) to have at least one sequence of n consecutive appearances of a predefined, fixed face.at n=5A115867
• a(n) = (n + n^2)*(binomial(2*n, n)).at n=6A119579
• Quasi-mirror of A062196 formatted as a triangular array.at n=39A124051
• Wiener index of the prism graph Y_n on 2n nodes.at n=41A138179
• Expansion of q * psi(q^2) * psi(-q^9) / (phi(-q^3) * psi(-q^3)) in powers of q where phi(), psi() are Ramanujan theta functions.at n=54A139214
• Row sums of A154685.at n=32A151675
• a(n) = 1331*n - 1122.at n=29A157441
• Record gaps between nonprime prime powers.at n=30A167186
• Triangle T(n, k, q) = (q+1)*binomial(n, k)*(Pochhammer(q+1, n)/(Pochhammer(q+1, k)*Pochhammer(q+1, n-k))), with T(n, 0) = T(n, n) = 1, and q = 1, read by rows.at n=60A174124
• Row sums of triangle A175009.at n=31A175006
• Numbers with prime factorization p*q^2*r^2*s^3 (where p, q, r, s are distinct primes).at n=12A190109