200000

Appears in sequences

• Powers of 2 written in base 4.at n=11A004643
• Powers of 2 written in base 8.at n=16A004647
• Powers of 2 written in base 16.at n=21A004655
• a(n) = Product_{i=0..7} floor((n+i)/8).at n=37A009694
• Numbers k equal to the number of 1's in the decimal digits of all numbers <= k.at n=12A014778
• Numbers k such that k^2 contains exactly 2 distinct digits.at n=34A016069
• Numbers of form 4^i*5^j, with i, j >= 0.at n=41A025617
• Numbers of form 5^i*8^j, with i, j >= 0.at n=29A025623
• a(n)/100000 gives sqrt(n) to 5 places after the decimal point.at n=3A027663
• Numbers k such that k^2 + k + 4 is a palindrome.at n=12A027716
• Numbers k that divide the (right) concatenation of all numbers <= k written in base 5 (most significant digit on left).at n=34A029450
• a(0) = 0; for n>0, a(n) is the smallest number greater than a(n-1) which does not use any digit used by a(n-1).at n=44A030283
• Numbers k such that k^3 has at most two different digits.at n=16A030292
• a(n) = floor(10^6/n).at n=4A033426
• a(n) = ceiling(sqrt(4*10^n)).at n=10A035071
• Triangle whose (i,j)-th entry is binomial(i,j)*4^(i-j)*10^j.at n=19A038240
• Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*4^j.at n=16A038306
• Ambitious numbers: numbers n with the property that if a number ends in n then it is divisible by n.at n=24A039690
• a(n) is the index of the smallest triangular number containing exactly n 0's.at n=8A048355
• Expansion of g.f. (1+2*x+5*x^2)/(1-10*x^3).at n=16A051109