270000
domain: N
Appears in sequences
- Numbers of form 3^i*10^j, with i, j >= 0.at n=40A025616
- For n>3: a(n) is a multiple of three distinct earlier terms.at n=31A060301
- a(n) = t(n)_t(n) where t() = triangular numbers A000217.at n=23A122628
- Numbers k such that k and k^2 use only the digits 0, 1, 2, 7 and 9.at n=47A136833
- Numbers k such that k and k^2 use only the digits 0, 2, 3, 7 and 9.at n=10A136895
- Numbers k such that k and k^2 use only the digits 0, 2, 4, 7 and 9.at n=41A136907
- Numbers k such that k and k^2 use only the digits 0, 2, 6, 7 and 9.at n=17A136923
- Numbers k such that k and k^2 use only the digits 0, 2, 7, 8 and 9.at n=13A136925
- Numbers k such that k and k^2 use only the digits 0, 2, 7 and 9.at n=5A136926
- a(n) = floor(p/2) * floor(floor(p/2)/2) * floor(floor(floor(p/2)/2)/2) * ... * 1, where p=prime(n).at n=25A163467
- Integers with exactly 100 divisors.at n=21A163816
- Integers that can be generated with a C/C++ expression that is two or more characters shorter than their decimal representation.at n=26A168651
- a(n) = 10*n^3.at n=30A244729
- Number of chordless cycles in the complete tripartite graph K_{n,n,n}.at n=24A297662
- Numbers that are highly powerful in Gaussian integers.at n=31A335853
- Cubefull numbers with more than 2 distinct prime factors.at n=11A391755