22487
domain: N
Appears in sequences
- Smallest k not a palindrome and not divisible by 10 such that k and R(k) (A004086) both are divisible by the n-th prime.at n=29A075605
- Triangle read by rows: T(n,k) = the number of Dyck paths of semilength n with k UDDU's.at n=32A135306
- Numbers n such that both n*Pi and n*e are within 1/sqrt(n) of integers.at n=39A208530
- Number of Dyck paths of semilength n having exactly one occurrence of the consecutive pattern UDDU.at n=11A244235
- Numbers n such that n, p=prime(n) and q=prime(p) have the same sum of digits.at n=37A261142