30245

Appears in sequences

• Integers k such that in the list of divisors of k (in base 6), each digit 0-5 appears equally often.at n=2A045815
• G.f.: Sum_{n>=0} x^n * Product_{k=1..n} (1+x^k)/(1-x^k).at n=27A207641
• Positions of records in A096303.at n=18A229743
• Triangular array T(n,k), read by rows: coefficients of strong divisibility sequence of polynomials p(1,x) = 1, p(2,x) = 1 + 3*x, p(n,x) = u*p(n-1,x) + v*p(n-2,x) for n >= 3, where u = p(2,x), v = 1 - x - x^2.at n=50A367208
• Numbers k such that A003415(k) >= A276086(k) and gcd(k, A003415(k)) = gcd(k, A276086(k)), where A003415 is the arithmetic derivative, and A276086 is the primorial base exp-function.at n=34A369959
• Numbers k such that (A276086(k)/s)^s >= k^(s-1) and A276086(k) <= A003415(k), where A003415 is the arithmetic derivative, A276086 is the primorial base exp-function, and s = bigomega(k).at n=38A370128