29116
domain: N
Appears in sequences
- a(n) is the concatenation of n and 4n.at n=28A019552
- Numbers k such that sigma(k) = 2*phi(k+1).at n=19A068423
- Partial sums of A080674.at n=6A145655
- The numbers of closed simply typable lambda terms of natural size n.at n=14A272794
- a(n) = 4*n*(n^2 - 3*n - 1)/3.at n=29A275876
- Number of parts in all twice partitions of n where the first partition is strict.at n=14A327607