8384513

Appears in sequences

• a(n) = 2^(2n+1) - 2^(n+1) + 1.at n=11A092440
• a(n) = ceiling((2^n + 1 - 2*floor(2^(n/2)))/2).at n=23A129757
• Expansion of (1 + 4*x - 6*x^2 - 16*x^3 + 20*x^4)/((1-x)*(1-2*x)*(1+2*x)*(1-2*x^2)).at n=22A171663
• Numbers that are both Poulet and Proth.at n=9A242880
• a(2n) = A060867(n+1), a(2n+1) = A092440(n+1).at n=21A276918
• Sequence of primitive Pythagorean triples beginning with the triple (3,4,5), with each subsequent triple having as its inradius the short leg of the previous triple, and with the long leg and the hypotenuse of each triple being consecutive natural numbers.at n=32A378963