330330

Appears in sequences

• a(n) = 35*(n+1)*binomial(n+4, 7)/4.at n=7A027803
• a(n) = 30*(n+1)*binomial(n+4,10).at n=4A027806
• a(n) = lcm(1,...,n) - (product of primes <= n).at n=12A068510
• a(n) = lcm(1,...,n) - (product of primes <= n).at n=13A068510
• a(n) = lcm(1,...,n) - (product of primes <= n).at n=14A068510
• a(n) = binomial(n+7,7) * binomial(n+10,10).at n=4A107422
• Numbers with exactly 6 distinct prime divisors {2,3,5,7,11,13}.at n=10A147573
• Irregular triangle M_2(n,k) read by rows: number of maximum k-matchings in rooted plane trees of size n, 1<=k<=n/2, 2<=n.at n=32A219731
• Average of twin prime pairs n having their decimal expansion of the form abcabc or abcabc0 such that n contains three twin primes as divisors.at n=3A235716
• Numbers k such that k-17, k-1, k+1 and k+17 are consecutive primes.at n=12A262176
• Numbers m that set records for the ratio A045763(n)/n.at n=38A294492
• Expansion of g.f. A(x,y) satisfying A(x,y) = 1 + x*A(x,y)/(1 - x*y * A(x,y))^2, as a triangle of coefficients T(n,k) of x^n*y^k in A(x,y), read by rows n >= 0.at n=72A365770
• Numbers k that are neither squarefree nor prime powers such that A119288(k) <= k/A007947(k) < A053669(k) and k has a primorial kernel but is not a product of primorials.at n=19A369419
• Numbers k neither squarefree nor prime powers such that A119288(k) <= k/A007947(k) < A053669(k) and A007947(k) is a primorial P(i) = A002110(i) for some i.at n=32A369540
• a(n) is the number of ways to place n indistinguishable balls into n distinguishable boxes with at least 4 boxes remaining empty.at n=10A370197