42136

Appears in sequences

• Convolution of A000203 with itself.at n=45A000385
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 31 ones.at n=19A031799
• Numbers n such that 183*2^n-1 is prime.at n=22A050843
• Numbers k such that k*Sum_{d|k} 1/sigma(d) is an integer.at n=26A069166
• Number of (n+1)X(1+1) 0..3 arrays x(i,j) with row sums sum{j^3*x(i,j), j=1..1+1} nondecreasing, and column sums sum{i^3*x(i,j), i=1..n+1} nondecreasing.at n=4A232754
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays x(i,j) with row sums sum{j^3*x(i,j), j=1..k+1} nondecreasing, and column sums sum{i^3*x(i,j), i=1..n+1} nondecreasing.at n=10A232756
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays x(i,j) with row sums sum{j^3*x(i,j), j=1..k+1} nondecreasing, and column sums sum{i^3*x(i,j), i=1..n+1} nondecreasing.at n=14A232756
• Irregular triangle read by rows: centered moments of the random Laplacian spectral distribution.at n=35A294441