39995

Appears in sequences

• Numbers k such that j(k)*phi(k) = sigma(phi(k)), j(k) = A033831(k).at n=28A033856
• Triangle in A059037 read by rows from left to right.at n=30A059038
• Triangle in A059037 read by rows in natural order.at n=30A059039
• Numbers n such that phi(phi(n)) + sigma(sigma(n)) - phi(sigma(n)) - sigma(phi(n)) = phi(n).at n=4A066945
• Smallest multiple of 5 with digit sum n.at n=34A069534
• Numbers whose set of base 6 digits is {0,5}.at n=43A097252
• Partial sums of A053872.at n=18A155974
• a(n) = 25*n^2 - 5.at n=39A158446
• Number of (n+2) X 5 binary arrays with each 3 X 3 subblock having rows and columns in lexicographically nondecreasing order.at n=15A184542
• Solution of the complementary equation a(n) = 2*a(n-1) - a(n-3) + b(n-1), where a(0) = 1, a(1) = 3, a(2) = 5, b(0) = 2, b(1) = 4, b(2) = 6, and (a(n)) and (b(n)) are increasing complementary sequences.at n=17A295614