49013

Appears in sequences

• Least k such that the first k terms of A006928 contain n more 2's than 1's.at n=26A025507
• Numbers k such that 221*2^k+1 is prime.at n=37A032487
• Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 20.at n=34A050969
• Irregular triangle read by rows: T(n,k) is the number of permutations in C_n (= the 1-cycles in S_n) having k stretching pairs.at n=47A216121
• Indices in A006928 where the imbalance between 1's and 2's sets a new record.at n=39A274775