28893

Appears in sequences

• Denominators of continued fraction convergents to sqrt(430).at n=10A041819
• Where 7^n occurs in n-almost-primes, starting at a(0)=1.at n=7A078845
• a(n) = (1/24)*(n+1)*(3*n^3+59*n^2+358*n+648).at n=18A090949
• Number of n-almost primes less than or equal to n^n.at n=6A116435
• Numbers k such that the k-th triangular number contains only digits {1,4,7}.at n=5A119127
• Let P1>=5, P2, P3 be consecutive primes, with P2-P1=2. a(n)=(P1+P2)/12 when P3-P2 sets a record.at n=14A329160
• Let P1, P2, P3, P4 be consecutive primes, with P2-P1=P4-P3=2. a(n)=(P1+P2)/12 when P3-P2 sets a new record.at n=6A329164
• Let P1, P2, P3, P4 be consecutive primes, with P2 - P1 = P4 - P3 = 2. a(n) = (P1 + P2)/12 for the first occurrence of (P3 - P1)/6 = n.at n=11A329250
• Let P1 >= 5, P2, P3 be consecutive primes, with P2 - P1 = 2. a(n) = (P1 + P2)/12 for the first occurrence of (P3 - P2)/2 = n.at n=33A329252
• 6*a(n) + 1 is the least upper prime p of a pair of twin primes p - 2, p, for which the prime gap immediately following p achieves the size 2*A007494(n).at n=22A337436
• Expansion of (1/x) * Series_Reversion( x * (1+x^3/(1-x))^3 ).at n=13A369081
• Array read by antidiagonals: T(n,k) is the index of prime(k)^n in the numbers with n prime factors, counted with multiplicity.at n=51A376479