20438

Appears in sequences

• Left border of triangle A137629.at n=32A137631
• a(n) = 169*n^2 - n.at n=10A157998
• a(n) = 121*n^2 - 11.at n=12A158539
• a(n) = 5*2^(n+1) - 3*(n+3).at n=11A169831
• Number of partitions p of n such that max(p)-min(p) = 8.at n=42A218571
• Number of length-4 0..n arrays with no repeated value differing from the previous repeated value by one or less.at n=10A269607
• Number of compositions of n whose Lyndon and co-Lyndon factorizations both have the same length.at n=17A329394
• Squared length of sum of e_lambda e_lambda', where e_lambda is an elementary symmetric function and lambda ranges over all partitions of n and lambda' is the adjoint (or transpose) of lambda.at n=29A332302