A curious bijection on natural numbers prefix ID Venkatachala, B.J. J. Integer Seq. 12(8), Article ID 09.8.1, 16 p., electronic only (2009)
Integer solutions of some Diophantine equations via Fibonacci and Lucas numbers prefix ID Demirtürk, Bahar; Keskin, Refik J. Integer Seq. 12(8), Article ID 09.8.7, 8 p., electronic only (2009)
Ramanujan type trigonometric formulas: the general form for the argument $\frac{2\pi}{7}$ prefix ID Wituła, Roman J. Integer Seq. 12(8), Article ID 09.8.5, 23 p., electronic only (2009)
Some trigonometric identities involving Fibonacci and Lucas numbers prefix ID Bibak, Kh.; Shirdareh Haghighi, M.H. J. Integer Seq. 12(8), Article ID 09.8.4, 5 p., electronic only (2009)
Two formulas for successive derivatives and their applications prefix ID Rządkowski, Grzegorz J. Integer Seq. 12(8), Article ID 09.8.2, 11 p., electronic only (2009)
Symmetric third-order recurring sequences, Chebyshev polynomials, and Riordan arrays prefix ID Barry, Paul J. Integer Seq. 12(8), Article ID 09.8.6, 30 p., electronic only (2009)
On the equation $a^x \equiv x\pmod{b^n}$ prefix ID Jiménez Urroz, J.; Yebra, J.Luis A. J. Integer Seq. 12(8), Article ID 09.8.8, 8 p., electronic only (2009)
Some classes of numbers and derivatives prefix ID Janjić, Milan J. Integer Seq. 12(8), Article ID 09.8.3, 14 p., electronic only (2009)
