881790

Appears in sequences

• Triangle read by rows in which row n contains first n numbers with exactly n distinct prime factors.at n=26A048692
• Squarefree kernel of lcm(binomial(n,0), ..., binomial(n,n)).at n=21A056606
• a(n) is the smallest positive integer m for which A070194(m) (i.e., the maximal gap in {k|gcd(k,m) = 1, 1 <= k <= m-1}) is n.at n=23A070971
• Triangle read by rows: T(n,k) = A002110(n)/prime(n+1-k), k = 1..n.at n=31A077011
• Triangle T(n,k) read by rows: T(n,0) = A002110(n) and T(n,k) = A002110(n)/prime(k) for 1<=k<=n.at n=41A121281
• Products of 7 distinct primes (squarefree 7-almost primes).at n=5A123321
• Least k such that the Jacobsthal function A048669(k) = n.at n=23A128759
• Numbers that are divisible by exactly 7 distinct primes.at n=5A176655
• Expansion of (8+6*x)/(1-x)^5.at n=33A190048
• Triangle in which n-th row contains all possible products of n-1 of the first n primes in descending order.at n=32A258566
• "Near Primorial" numbers.at n=22A259629
• First differences of (provable) Sierpiński numbers (A076336).at n=31A270971
• Numbers that appear in A195441 at least once for two consecutive indices.at n=14A286763
• Irregular triangle read by rows: T(m, k) is the list of squarefree numbers A002110(m) < t < 2*A002110(m) such that A001221(t) = m.at n=18A288813
• a(n) = Product_{d|n, d<n} prime(1+A056239(d)), where A056239(d) gives the weight of the partition whose Heinz-number is d.at n=65A319352
• Indices k of records of low value in the ratios A348173(k)/k.at n=9A348174
• Indices of records in A353693.at n=31A353695
• Numbers of the form A002110(k)/prime(i); i = 2..k-1; sorted.at n=17A372666
• Table read by row, where T(n,k), n>0 and k>0, represents the smallest n-digit number that is the product of k distinct primes and is sandwiched between semiprime numbers, or -1 if no such number exists.at n=24A379167