100009

Appears in sequences

• Expansion of (1+3*x^2+7*x^3+15*x^4+13*x^5+15*x^6+8*x^7+4*x^8)/((1-x)*(1-x^2)^3*(1-x^3)^2).at n=25A037241
• Numbers having four 0's in base 10.at n=17A043492
• Numbers k such that k^2 contains only digits {0,1,8}, not ending with zero.at n=9A058421
• Smallest n-digit multiple of the n-th prime.at n=5A079821
• Numbers of the form 10^k + 1, 3, 7, or 9 for k>=1.at n=19A088265
• Numbers k such that k and k^2 use only the digits 0, 1, 4, 8 and 9.at n=52A136867
• Numbers k such that k and k^2 use only the digits 0, 1, 5, 8 and 9.at n=36A136874
• Numbers k such that k and k^2 use only the digits 0, 1, 6, 8 and 9.at n=38A136879
• Numbers k such that k and k^2 use only the digits 0, 1, 7, 8 and 9.at n=38A136880
• Numbers k such that k and k^2 use only the digits 0, 1, 8 and 9.at n=36A136881
• a(n) = 10^n + 9.at n=5A253213
• a(n) = n^5 + n - 1.at n=10A271208
• E.g.f. A(x) satisfies: A( A( x^3*exp(-3*x) )^(1/3) ) = x.at n=6A274393
• Indices of records in A045537.at n=29A373942
• a(n) is the least composite number obtained by inserting a nonempty string of 0's inside n.at n=9A382277