This study presents novel arctangent identities that establish connections between the Jacobsthal and Jacobsthal-Lucas numbers. These findings contribute to the understanding of the interplay between trigonometric functions and number theory, particularly in relation to well-known mathematical sequences and constants.
In the present work, two new recurrences of the Jacobsthal sequence
are defined. Some identities of these sequences which we call the Jacobsthal
array is examined. Also, the generating and series functions of the Jacobsthal
array are obtained.
This study explores the formation of polynomials of at most degree nusing the first n+1 terms of the Jacobsthal and Jacobsthal-Lucas sequences through Lagrange interpolation. The paper provides a detailed examination of the recurrence relations and various identities associated with the Jacobsthal
and Jacobsthal-Lucas Lagrange Interpolation Polynomials.
In the present work we consider the Jacobsthal and Jacobsthal-
Lucas sequences with the Jacobsthal and Jacobsthal-Lucas subscripts sequences;
that is, the numbers of the form
Xn = JJn, Zn = Jjn, Yn = jjn and Tn = jJn.
We obtain some identities and relations for the Jacobsthal and Jacobsthal-
Lucas subscripts sequences.
Also, we give recursive definitions for the sequences Xn, Zn, Yn and Tn.
In this paper, we consider the Fibonacci, Lucas, Pell, Pell-Lucas, Jacobsthal, Jacobsthal-Lucas sequences.
We introduce the quadra Fibona-Pell,Fibona-Jacobsthal and Pell-Jacobsthal and the hexa Fibona-Pell-
Jacobsthal sequences whose compounds are the Fibonacci, Pell and Jacobsthal sequences. We derive the
Binet-like formulas, the generating functions and the exponential generating functions of these sequences.
Also, we obtain some binomial identities for them.