82082

Appears in sequences

• Number of 2 X 2 regular integer matrices with elements from {0,...,n} up to row and column permutation.at n=23A064363
• Numbers k such that 1/(1/phi(k) + 1/phi(k+1) + 1/phi(k+2) + 1/phi(k+3)) is an integer.at n=20A073544
• Earliest sequence such that (x+y) | a(xy) for all x>=1, y>=1.at n=39A169901
• Zero together with the partial sums of A056640.at n=26A274772
• Squarefree integers m > 1 such that if prime p divides m, then s_p(m) >= p and s_p(m) == 2 (mod p-1), where s_p(m) is the sum of the base p digits of m.at n=16A324404
• Oblong numbers which are products of five distinct primes.at n=22A359304