130240

Appears in sequences

• Glaisher's function V(n).at n=43A002611
• Numbers k such that 129*2^k-1 is prime.at n=49A050590
• a(n) = A080313(n)/2.at n=16A080315
• Arises in enumerating Huffman codes, compact trees, and sums of unit fractions.at n=19A194632
• a(n) = 4*n*(21*n - 26).at n=40A263229