See OEIS [A129818][1] and the unsigned version [A085478][2] as well as [A049310][3], [A011973][4], and [A054142][5]. Relations among the Gegenbauer, Jacobi, Legendre, and the polynomials highlighted in this post can be found in OEIS [A097610][6] via A011973 and A049310. [A102426][7], [A030528][8], A011973, A049310 contain relations to the Pascal, Fibonacci, Chebyshev, and other polynomials. [1]: https://oeis.org/A129818 [2]: https://oeis.org/A085478 [3]: https://oeis.org/A049310 [4]: https://oeis.org/A011973 [5]: https://oeis.org/A054142 [6]: https://oeis.org/A097610 [7]: https://oeis.org/A102426 [8]: https://oeis.org/A030528