210100

Appears in sequences

• a(n) = n^2 written in base 3.at n=24A001738
• Numerators of continued fraction convergents to sqrt(416).at n=8A041790
• 3-smooth numbers in ternary representation.at n=34A131096
• a(n) = 225*n^2 - 199*n + 44.at n=31A156812
• Modified Sisyphus function of order 5: a(n) is the concatenation of the number of digits in n with the number of digits of n congruent to k modulo 5 for each k from 0 to 4 in turn.at n=20A375208
• Modified Sisyphus function of order 5: a(n) is the concatenation of the number of digits in n with the number of digits of n congruent to k modulo 5 for each k from 0 to 4 in turn.at n=25A375208