OFFSET
1,1
LINKS
Albert Tarantola, PSE of Elements (Janet form).
Anonymous, Janet periodic table, Web Elements Chemistry Nexus
FORMULA
sum_{n=1..32} a(n) = A000217(120).
EXAMPLE
a(1) = 57 (La) +89 (Ac).
a(14) = 70 (Yb) +102 (No).
a(15) = 21 (Sc) +39 (Y) +71 (Lu) +103 (Lr).
a(24) = 30 (Zn) +48 (Cd) +80 (Hg) +112.
a(25) = 5+13+31+49+81+113.
a(31) = 1 (H) +3 (Li) +11 (Na) +19 (K) +37 (Rb) +55 (Cs) +187 (Fr) +119.
CROSSREFS
KEYWORD
nonn,less,fini,full
AUTHOR
Paul Curtz, Oct 06 2009
EXTENSIONS
a(32) corrected, tutorial description of the PSE and historical anectodes removed. - R. J. Mathar, Oct 07 2009
STATUS
approved