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A217927 Elements of the horizontal ADOMAH periodic table written from right to left, from bottom to top. 1
2, 1, 4, 3, 10, 9, 8, 7, 6, 5, 12, 11, 18, 17, 16, 15, 14, 13, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 36, 35, 34, 33, 32, 31, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 70, 69, 68, 67, 66, 65, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 38, 37, 54, 53, 52, 51, 50, 49, 80, 79, 78, 77, 76, 75, 74, 73, 72, 71, 102, 101, 100, 99, 98, 97, 96, 95, 94, 93, 92, 91, 90, 89 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

We first write a variant of the ADOMAH periodic table:

                                                              1  2

                                           5  6  7  8  9 10   3  4

           21 22 23 24 25 26 27 28 29 30  13 14 15 16 17 18  11 12

57 to  70  39 40 41 42 43 44 45 46 47 48  31 32 33 34 35 36  19 20     (B)

89 to 102  71 72 73 74 75 76 77 78 79 80  49 50 51 52 53 54  37 38

          103104105106107108109110111112  81 82 83 84 85 86  55 56

                                         113114115116117118  87 88

                                                            119120

(See A219388).

It could be written vertically.

Differences of (2,4,12,20,38,56,88,120,... = A168380) = 2,8,8,18,18,... = A093907 from a 118 terms table.

The number of elements in the n-th period (2,8,18,32,32,18,8,2) is in A168281. Compare to A093907 = 2,8,8,18,18,32,32,50,...(extension of the Mendeleyev-Moseley-Seaborg table) and A137583 = 2,2,8,8,18,18,32,32. See the possible element 120 in A168208 (which must be clarified).

The horizontal ADOMAH periodic table (2006) is

                                                            119120

                                         113114115116117118  87 88

          103104105106107108109110111112  81 82 83 84 85 86  55 56

89 to 102  71 72 73 74 75 76 77 78 79 80  49 50 51 52 53 54  37 38     (A)

57 to  70  39 40 41 42 43 44 45 46 47 48  31 32 33 34 35 36  19 20

           21 22 23 24 25 26 27 28 29 30  13 14 15 16 17 18  11 12

                                           5  6  7  8  9 10   3  4

                                                              1  2

Generally it is written vertically.

REFERENCES

Philip J. Stewart, "Charles Janet, Unrecognized genius of the periodic system", Foundations of Chemistry, January, 2009. ISSN 1386-4238.

LINKS

Table of n, a(n) for n=1..94.

V. Tsimmerman, ADOMAH Periodic Table

CROSSREFS

Cf. A137325.

Sequence in context: A181882 A109195 A258310 * A284709 A307365 A032662

Adjacent sequences:  A217924 A217925 A217926 * A217928 A217929 A217930

KEYWORD

nonn,full,fini,less

AUTHOR

Paul Curtz, Oct 15 2012

EXTENSIONS

Reference given by Jean-François Alcover, Oct 22 2012

Typos corrected in comments by Jean-François Alcover, Nov 16 2012

STATUS

approved

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Last modified October 18 10:53 EDT 2021. Contains 348067 sequences. (Running on oeis4.)