30242

Appears in sequences

• Partial sums of usigma(n)^2: square of the sum of unitary divisors of n.at n=34A074789
• Sum of A095734(p) for all primes p such that Fib(n+1) <= p < Fib(n+2) (where Fib = A000045).at n=24A095732
• a(n) = Sum_{d|n} n!/(d!*(n/d)!).at n=9A121860
• Sums of 3 distinct primorials.at n=27A177697
• Places of records of A188550.at n=21A188592
• Composite numbers whose concatenation of their aliquot parts, in ascending order, is a palindrome.at n=40A249300
• Number of nX2 arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 5 and columns nondecreasing modulo 6.at n=7A264712
• Numbers that are the sum of distinct primorial numbers (A002110) (not including 1).at n=40A290249
• Numbers n such that the arithmetic derivative of A276086(n) is prime.at n=35A328233
• 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=33A369959
• 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=37A370128
• Sums of three primorials > 1.at n=41A370137