77560

Appears in sequences

• Theta series of lattice D20+.at n=4A014747
• Theta series of D_20 lattice.at n=2A022051
• Theta series of D*_20 lattice.at n=4A022073
• Numbers k such that 291*2^k + 1 is prime.at n=37A053362
• Expansion of theta_4(q)^20 in powers of q = exp(Pi i t).at n=4A319308
• a(n) = (2/3)*n*(n^3 - 6*n^2 + 11*n - 3).at n=20A319575
• Nonunitary weird numbers: numbers that are nonunitary abundant but not nonunitary pseudoperfect.at n=33A327948