51039

Appears in sequences

• Number of n-node graphs not determined by their spectrum.at n=8A006608
• Odd square pyramidal numbers.at n=26A015221
• Erroneous version of A006608.at n=8A099883
• Structured rhombic dodecahedral numbers (vertex structure 9).at n=26A100157
• 1/24 of product of three numbers: n-th prime, previous and following number.at n=26A127922
• Number of squares formed from a square composed of p^2 unit squares where p is n-th prime.at n=15A262247
• a(n) is the number of edges formed by n-secting the angles of a nonagon (enneagon).at n=38A335783
• a(n) is the smallest square pyramidal number with binary weight n.at n=11A359318