27775

Appears in sequences

• Centered octahedral numbers (crystal ball sequence for cubic lattice).at n=27A001845
• a(n) = A063997(n)/4.at n=35A088406
• Total number of parts of multiplicity 3 in all partitions of n.at n=42A117524
• a(n) = A131766(n) / 18.at n=24A131871
• Terms in A046034 which are pairwise products of terms in A046034.at n=29A153446
• a(n) = 3600*n^2 - 1601*n + 178.at n=2A157853
• Numbers which can be expressed as the product of numbers made of only fives.at n=17A161143
• a(n) = n^2*(1+n)*(1+n^2)/4.at n=9A328994