70278

Appears in sequences

• a(n) = n*(2*n-1)*(2*n+1).at n=26A035328
• Distinct even numbers in writing first numerator and then denominator of each element of the 1/4-Pascal triangle (by row).at n=18A046589
• Smallest fixed points (>0) of the base-2*n Kaprekar map.at n=25A319839