To chrisg.26d. ....series is one in which each term is the sum of the two previous terms 0,1,1,2,3,5.
30d proton or neutron as a component of the center of an atom.
36dsyringa vulgaris is the common .....
Hence,26d is fibonacci. 30d is nucleus. and 36d is lilac.
therefore I have -i-s-c-, possibly bio----