43478

Appears in sequences

• a(n) = floor(10^6/n).at n=22A033426
• Number of steps to reach 1 in '3x+1' (or Collatz) problem starting with the n-th Mersenne prime.at n=17A181777
• T(n,k)=Number of nXk 0..3 arrays with every element plus 1 mod 4 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.at n=29A278188
• Number of 2 X n 0..3 arrays with every element plus 1 mod 4 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.at n=6A278189
• Expansion of Sum_{i>=1} x^(i^3) / (1 - Sum_{j>=1} x^(j^3))^2.at n=40A281809
• Binomial(n,4) - A290447(n).at n=48A290461
• a(n) = A006561(n) - A290447(n).at n=48A290465
• Number of integer partitions of n where the median is twice the minimum.at n=48A361861