Recursive evaluation of 3j and 6j coefficients

Title of program: J1-RECURSION OF 6J-COEFFICIENTS Catalogue Id: ACWS_v1_0 Nature of problem Subroutine REC6J generates 6j-coefficients from the exact solution of a recursion equation. The algorithm is more efficient and accurate than those based on explicit expressions, particularly, in the commonly arising case in which a complete set of 6j-coefficients is needed. The algorithm is numerically stable for large quantum numbers which occur in problems of molecular dynamics. Versions of this program held in the CPC repository in Mendeley Data acws_v1_0; J1-RECURSION OF 6J-COEFFICIENTS; 10.1016/0010-4655(76)90058-8 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)