1200000

Appears in sequences

• One tenth of deca-factorial numbers.at n=4A035279
• Triangle whose (i,j)-th entry is binomial(i,j)*2^(i-j)*10^j.at n=26A038216
• Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*2^j.at n=22A038304
• Members of A016052 whose digit sum is three.at n=29A119507
• Integers that can be generated with a C/C++ expression that is three or more characters shorter than their decimal representation.at n=11A168652
• G.f.: Sum_{n>=0} (5*n+1)^n * x^n / (1 + (5*n+1)*x)^n.at n=5A187740
• Triangle read by rows: minimum inversion terminator in rooted labeled trees.at n=40A217877
• Ternary numbers consisting of a run of 1's, then a run of 2's, then a run of 0's.at n=30A371051