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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 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 December 3 09:50 EST 2022. Contains 358517 sequences. (Running on oeis4.)