30363

Appears in sequences

• a(n) = Sum_{i=1..n} LookAndSay(i).at n=36A079664
• Expansion of x * (x+1) * (x^3-x^2-1) / ((x^2+1) * (x^3+x^2-1)).at n=39A122519
• Numbers X such that 30*X^2-45 is a square.at n=3A133275
• Numbers of the form prime(n)*(prime(n)-1)/4.at n=32A171555
• Number of nX3 integer arrays with each element equal to the number of horizontal, vertical and antidiagonal neighbors less than itself.at n=3A265875
• Number of nX4 integer arrays with each element equal to the number of horizontal, vertical and antidiagonal neighbors less than itself.at n=2A265876
• T(n,k)=Number of nXk integer arrays with each element equal to the number of horizontal, vertical and antidiagonal neighbors less than itself.at n=17A265878
• T(n,k)=Number of nXk integer arrays with each element equal to the number of horizontal, vertical and antidiagonal neighbors less than itself.at n=18A265878
• Numbers m such that 20*m + 1, 80*m + 1, 100*m + 1, and 200*m + 1 are all primes.at n=35A372186