22183

Appears in sequences

• Numbers whose base-3 representation has exactly 10 runs.at n=15A043590
• Numbers n such that number of runs in the base 3 representation of n is congruent to 1 mod 9.at n=33A043807
• Numbers n such that number of runs in the base 3 representation of n is congruent to 0 mod 10.at n=15A043815
• Total number of palindromic primes in base 3 below 3^n.at n=22A117775
• Total number of palindromic primes in base 3 below 3^n.at n=23A117775
• Number of nX4 0..2 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally.at n=4A201151
• Number of nX5 0..2 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally.at n=3A201152
• T(n,k)=Number of nXk 0..2 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally.at n=31A201155
• T(n,k)=Number of nXk 0..2 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally.at n=32A201155
• Numbers n such that phi(n) = sigma(n) - reversal(sigma(n)).at n=8A230012
• a(1) = 1; a(n+1) = Sum_{d|n, n/d odd} a(d)^(n/d).at n=44A307780
• Array read by downward antidiagonals: A(n,k) = A(n-1,k+1) + 2*(k+1)!*Sum_{j=0..k} A(n-1,j)/j! with A(0,k) = 1, n >= 0, k >= 0.at n=23A379458