90209
domain: N
Appears in sequences
- Palindromic in bases 10 and 16.at n=19A029731
- Palindromes that start with 9.at n=24A043044
- Numbers n with property that n^2 starts and ends with 81.at n=18A159775
- Smallest palindromic number of 5 digits in two bases differing by n.at n=5A216899
- Palindromic composite numbers starting with a digit 9.at n=22A222729
- Number of Dyck paths of semilength n having exactly 1 occurrence of the consecutive steps UDUUUDDDUD (with U=(1,1), D=(1,-1)).at n=9A243871
- Number T(n,k) of Dyck paths of semilength n having exactly k (possibly overlapping) occurrences of the consecutive steps UDUUUDDDUD (with U=(1,1), D=(1,-1)); triangle T(n,k), n>=0, 0<=k<=max(0,floor((n-1)/4)), read by rows.at n=30A243881
- a(n) is the largest integer value of Product_{k=1..n} (2 + 1/t_k) with integers t_k > 1.at n=12A355243