Alanine (denoted by A) C(3)H(7)N(1)O(2) consists of 13 atoms.
Cysteine (denoted by C) C(3)H(7)N(1)O(2)S(1) consists of 14 atoms.
Aspartic acid (denoted by D) C(4)H(7)N(1)O(4) consists of 16 atoms.
Glutamic acid (denoted by E) C(5)H(9)N(1)O(4) consists of 19 atoms.
Phenylalanine (denoted by F) C(9)H(11)N(1)O(2) consists of 23 atoms.
Glycine (denoted by G) C(2)H(5)N(1)O(2) consists of 10 atoms.
Histidine (denoted by H) C(6)H(9)N(3)O(2) consists of 20 atoms.
Isoleucine (denoted by I) C(6)H(13)N(1)O(2) consists of 22 atoms.
Lysine (denoted by K) C(6)H(14)N(2)O(2) consists of 24 atoms.
Leucine (denoted by L) C(6)H(13)N(1)O(2) consists of 22 atoms.
Methionine (denoted by M) C(5)H(11)N(1)O(2)S(1) consists of 20 atoms.
Asparagine (denoted by N) C(4)H(8)N(2)O(3) consists of 17 atoms.
Proline (denoted by P) C(5)H(9)N(1)O(2) consists of 17 atoms.
Glutamine (denoted by Q) C(5)H(10)N(2)O(3) consists of 20 atoms.
Arginine (denoted by R) C(6)H(14)N(4)O(2) consists of 26 atoms.
Serine (denoted by S) C(3)H(7)N(1)O(3) consists of 14 atoms.
Threonine (denoted by T) C(4)H(9)N(1)O(3) consists of 17 atoms.
Valine (denoted by V) C(5)H(11)N(1)O(2) consists of 19 atoms.
Tryptophan (denoted by W) C(11)H(12)N(2)O(2) consists of 27 atoms.
Tyrosine (denoted by Y) C(9)H(11)N(1)O(3) consists of 24 atoms.
There are two abbreviations for each amino acid. Here I use the first abbreviation of one letter which determines the order.
Each formula is written in two orders: oxygennitrogen and nitrogenoxygen. The last column denotes the page in the mentioned dictionary where the corresponding data can be found.
 n  abb1  abb2  amino acid  (O,N)order  (N,O)order  atoms  page 

 1  A  Ala  alanine  C3H7O2N  C3H7NO2  13  10 
 2  C  Cys  cysteine  C3H7O2NS  C3H7NO2S  14  116 
 3  D  Asp  aspartic acid  C4H7O4N  C4H7NO4  16  35 
 4  E  Glu  glutamic acid  C5H9O4N  C5H9NO4  19  187 
 5  F  Phe  phenylalanine  C9H11O2N  C9H11NO2  23  304 
 6  G  Gly  glycine  C2H5O2N  C2H5NO2  10  188 
 7  H  His  histidine  C6H9O2N3  C6H9N3O2  20  199 
 8  I  Ile  isoleucine  C6H13O2N  C6H13NO2  22  220 
 9  K  Lys  lysine  C6H14O2N2  C6H14N2O2  24  238 
 10  L  Leu  leucine  C6H13O2N  C6H13NO2  22  233 
 11  M  Met  methionine  C5H11O2NS  C5H11NO2S  20  254 
 12  N  Asn  asparagine  C4H8O3N2  C4H8N2O3  17  34 
 13  P  Pro  proline  C5H9O2N  C5H9NO2  17  327 
 14  Q  Gln  glutamine  C5H10O3N2  C5H10N2O3  20  187 
 15  R  Arg  arginine  C6H14O2N4  C6H14N4O2  26  32 
 16  S  Ser  serine  C3H7O3N  C3H7NO3  14  357 
 17  T  Thr  threonine  C4H9O3N  C4H9NO3  17  397 
 18  V  Val  valine  C5H11O2N  C5H11NO2  19  417 
 19  W  Trp  tryptophan  C11H12O2N2  C11H12N2O2  27  409 
 20  Y  Tyr  tyrosine  C9H11O3N  C9H11NO3  24  411 
