58253

Appears in sequences

• Expansion of (1+3*x+9*x^2+12*x^3+11*x^4+3*x^5+x^6)/((1-x)^2*(1-x^2)^2*(1-x^3)).at n=24A055383
• a(n) = 3*A131666(n) - A131666(n+1).at n=19A135259
• Numbers of form 4^(3*k+l+1)/9 - 4^l/9 - 1/3 or 2*4^(3*k+l+2)/9 - 2*4^l/9 - 1/3, k,l>=0.at n=32A172143
• Odd numbers producing exactly 3 odd numbers in the Collatz (3x+1) iteration.at n=21A198584
• Last number in row n of triangle A199636.at n=15A199638
• Odd numbers having no odd primes in their Collatz (3x+1) trajectory.at n=18A221475
• Odd numbers producing 3 decreasing odd numbers in the Collatz (3x+1) iteration.at n=18A228872
• Triangular array: row n gives the coefficients of the polynomial p(n,x) defined in Comments.at n=38A247376
• Odd numbers n containing 65536 as the highest power of 2 in their Collatz (3x+1) iteration.at n=14A247716
• Numbers of the form (2^(2*j + 6*k + 5) - 2^(2*j + 1) - 3)/9, with j,k >= 0.at n=14A342815