30222

Appears in sequences

• "DHK" (bracelet, identity, unlabeled) transform of 0,1,1,1,...at n=30A032244
• a(n) = T(n,n-4), array T as in A055818.at n=24A055821
• Difference between the sum of next prime(n) natural numbers and the sum of next n primes.at n=22A082749
• Sequence A014486 shown in base 4.at n=37A085185
• Number of days after Mar 01 00 such that the date written in the format DD.MM.YY is palindromic.at n=26A210887
• Numbers k such that sigma(phi(k)) - phi(k) = phi(sigma(k)), where phi(k) is the Euler totient function of k and sigma(k) is the sum of the divisors of k.at n=10A271633
• Number of finite sets of positive integers whose right half (exclusive) sums to n.at n=48A360954