260066

Appears in sequences

• Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 2,1,3.at n=6A037635
• a(n) = 225*n^2 - n.at n=33A156813
• a(n) = 900*n^2 - 2*n.at n=16A158408
• a(n) = 1156*n^2 - 34.at n=14A158729