62567

Appears in sequences

• Numbers k such that the k-th triangular number contains each of the 10 decimal digits exactly once.at n=8A115939
• Numbers k such that the centered triangular number A005448(k) = 3*k*(k-1)/2 + 1 is a perfect square.at n=11A129444
• Numbers k such that 2^(k+1) == 1 (mod k).at n=36A187787
• Composite numbers n such that b^(n+1) == 1 (mod n) for every b coprime to n.at n=17A208728
• a(n) = n*(7*n^2 + 15*n + 8)/6.at n=37A245301
• a(n) = n^3 + 2*n^2 + 5*n + 11.at n=39A271779