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A101272 a(n)=n, n <=6; a(n)=6, n > 6. 3
1, 2, 3, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Sequence of electron arrangements in the 2p, 3p, 4p and 5p atomic subshells.

REFERENCES

A. Beiser, Concepts of Modern Physics, 2nd Ed., McGraw-Hill, 1973.

R. M. Tennent (Editor), Science Data Book, Oliver & Boyd, 1971.

LINKS

Table of n, a(n) for n=1..105.

FORMULA

a(n)=n, n <=6; a(n)=6, n > 6.

Euler transform of length 6 sequence [ 2, 0, 0, 0, 0, -1]. - Michael Somos, Aug 31 2006

G.f.: (1-x^6)/(1-x)^2. - Michael Somos, Aug 31 2006

a(n) = min(n,6). - Wesley Ivan Hurt, Apr 16 2014

EXAMPLE

a(6)=6.

MATHEMATICA

Table[Min[n, 6], {n, 120}] (* Harvey P. Dale, Mar 09 2014 *)

PROG

(PARI) a(n)=min(6, n) /* Michael Somos, Aug 31 2006, edited by M. F. Hasler, Apr 16 2014 */

CROSSREFS

Cf. A040000.

Sequence in context: A293705 A036055 A034151 * A006160 A071640 A102674

Adjacent sequences:  A101269 A101270 A101271 * A101273 A101274 A101275

KEYWORD

easy,nonn

AUTHOR

Jeremy Gardiner, Dec 19 2004

STATUS

approved

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Last modified October 22 21:08 EDT 2018. Contains 316503 sequences. (Running on oeis4.)