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 A217923 F-block elements for Janet periodic table. 2
 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Comment from Paul Curtz, Oct 26 2012 (Start): Tarantola's formulas for the Janet table: Let D(n) = n*(n+1)*(n+2)/6 + (1-(-1)^n)*(n+1)/4 =A168380(n). The row  R  at which the element with the atomic number Z is to be placed  is the unique value of R satisfying D(R-1) < Z <= D(R). Once the row  number  R  is determined, the column number is, from right to left, C = D(R) -Z  + 1. Example: Z=109.  D(7)< Z <=D(8)=120. C=120 -109 +1=12. (End) LINKS Wikipedia, The Janet periodic table MATHEMATICA Join[Range[57, 70], Range[89, 102]] CROSSREFS Cf. A160914 (s-block), A138469 (p-block), A199934 (d-block). Sequence in context: A033377 A291496 A036184 * A136542 A042623 A072466 Adjacent sequences:  A217920 A217921 A217922 * A217924 A217925 A217926 KEYWORD nonn,tabl,fini AUTHOR Jean-François Alcover, Oct 15 2012 STATUS approved

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Last modified August 6 10:14 EDT 2020. Contains 336245 sequences. (Running on oeis4.)