76452

Appears in sequences

• a(n) = n*(n + 1)*(n^2 + n + 2)/4.at n=23A001621
• Theta series of lattice Kappa_8.at n=18A015235
• Coordination sequence for A_23 lattice.at n=2A035849
• a(n) = (7*n + 3)*(7*n + 4).at n=39A177071
• z-value of the lexicographically first solution (x,y,z) of 4/n = 1/x + 1/y + 1/z with 0 < x < y < z all integers, or 0 if there is no such solution. Corresponding x and y values are in A257839 and A257840.at n=45A257841
• Starts of runs of 4 consecutive positive negabinary-Niven numbers (A331728).at n=23A331824