05A15 05A10 3 20M20 2 06A06 1 11B37 1 11B83 1 20M17 1 20M18 1 Binet formula 1 Generating function 1 Generating matrix 1 Jacobsthal numbers 1 Jacobsthal-Lucas numbers 1 breadth 1 collapse 1 fix 1 full transformation 1 height 1 height and right (left) waist of a transformation. Idempotents and nilpotents 1 order polynomial 1 partial one-one transformation 1 partial transformation 1 partially ordered set 1 polynomial function 1 right (left) waist and fix of a transformation. Idempotents and nilpotents 1 sectional geometric genus 1