231868

Appears in sequences

• Triangle of numbers of Dyck paths.at n=49A039797
• Triangle read by rows: numbers of Dyck paths.at n=50A039798
• Triangle V(l,p) (l>=0, p=0..l) read by rows: see Formula for definition, see Comments for motivation.at n=109A179898
• Triangle read by rows: the Y-transformation of the Catalan triangle A033184.at n=30A228335
• Number T(n,k) of length 2n words such that all letters of the k-ary alphabet occur at least once and are introduced in ascending order and which can be built by repeatedly inserting doublets into the initially empty word; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=42A256117
• Number of words of length 2n such that all letters of the senary alphabet occur at least once and are introduced in ascending order and which can be built by repeatedly inserting doublets into the initially empty word.at n=2A258493
• Numbers n such that the result of n multiplied by the reversal of n can be split into two numbers a and b of equal length (if the length is odd a leading zero is allowed), where a + b equals n (b can also have a leading zero).at n=26A259316
• Numbers such that the list of exponents of their factorization is a palindromic list of primes.at n=32A322525
• Terms of A301517 that are not exponentially odd numbers (A268335).at n=19A335989