132867

Appears in sequences

• Numbers whose 4th power can be expressed as the sum of two positive cubes in more than one way.at n=31A051388
• Numbers k such that phi(k)/lambda(k) increases to a record value, where phi(k) is the Euler totient function (A000010) and lambda(k) is the Carmichael lambda function (A002322).at n=26A066605
• a(n+1) = 3*a(n) - n.at n=12A164039
• a(n) = 7*a(n-1) - 23*a(n-2) + 49*a(n-3) - 49*a(n-4) with a(0)=0, a(1)=1, a(2)=7, a(3)=19.at n=12A214525
• a(n) = 3*binomial(6*n+9,n)/(2*n+3).at n=5A233829
• Numbers in A003325 whose 4th power is the sum of two positive cubes in a nontrivial way.at n=19A282872
• Numbers that can be written in exactly three different ways as s_1^x_1 + ... + s_t^x_t, with 1 < s_1 < ... < s_t and {s_1,..., s_t} = {x_1,..., x_t} for some t > 0.at n=16A386967
• Numbers that can be written in exactly two different ways in the form described by A387302.at n=24A387898
• Odd numbers m such that at least one of the factors of Stern polynomial B(m,x) has at least one negative coefficient.at n=35A389915