70643

Appears in sequences

• a(n) = n^3 + n^2 + n.at n=41A027444
• a(n) = prime(n)^3 + prime(n)^2 + prime(n).at n=12A181149
• Number of (6+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 1 3 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 1 3 6 or 7.at n=7A252311
• a(n) = -4*a(n-1) - 3*a(n-2) + a(n-3), a(0) = 1, a(1) = -2, a(2) = 4.at n=12A322504
• Numbers of the form p*q, where p is prime and q=(p^k-1)/(p-1) is also prime for some integer k>1.at n=10A330832
• a(n) = Sum_{k=0..floor(n^2/(2*n+1))} binomial(n * (n-2*k),k).at n=11A373719
• Nonprime-powers k such that, for any prime p dividing k and m = 1+floor(log k/log p), rad(p^m (mod k)) divides k, where rad = A007947.at n=19A381750
• Numbers k in A024619 such that all residues r (mod k) in row k of A381801 are such that rad(r) divides k, where rad = A007947.at n=12A382438