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A137913 Rows 2, 4, 6 of Mendeleyev-Seaborg (extended to 32 columns) periodic table elements. 2
3, 4, 5, 6, 7, 8, 9, 10, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

58 terms. Companion of A137904(60 terms). Both "well" ordered give 118 terms sequence (increasing) 1 to 118;19-10=9, 55-36=19, a(n) differences lead to difference 3 before a(0)=3. Hence neutral element 0.

LINKS

Table of n, a(n) for n=0..57.

CROSSREFS

Cf. A134984, A135559.

Sequence in context: A160238 A039165 A138220 * A137937 A260580 A297468

Adjacent sequences:  A137910 A137911 A137912 * A137914 A137915 A137916

KEYWORD

nonn,fini,full

AUTHOR

Paul Curtz, Apr 30 2008

STATUS

approved

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Last modified September 26 05:07 EDT 2021. Contains 347664 sequences. (Running on oeis4.)