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A063497 Atoms in first n shells of type I hyperfullerene. 1
0, 60, 300, 840, 1800, 3300, 5460, 8400, 12240, 17100, 23100, 30360, 39000, 49140, 60900, 74400, 89760, 107100, 126540, 148200, 172200, 198660, 227700, 259440, 294000, 331500, 372060, 415800, 462840, 513300, 567300, 624960, 686400, 751740, 821100, 894600 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

The third derivative of the sum of 5th powers: A000539. - Gregory R. Bryant, Jun 14 2013

REFERENCES

T. P. Martin, Shells of atoms, Phys. Reports, 273 (1996), 199-241, eq. (14).

LINKS

Harry J. Smith, Table of n, a(n) for n=0,...,1000

FORMULA

a(n) = 20*n^3+30*n^2+10*n.

G.f.: 60*x*(1+x)/(1-x)^4. [Colin Barker, Mar 01 2012]

MATHEMATICA

Table[20*n^3 + 30*n^2 + 10*n, {n, 0, 50}] (* David Nacin, Mar 01 2012 *)

PROG

(PARI) { for (n=0, 1000, write("b063497.txt", n, " ", 20*n^3 + 30*n^2 + 10*n) ) } \\ Harry J. Smith, Aug 23 2009

CROSSREFS

Sequence in context: A268805 A146750 A298045 * A096363 A033591 A133118

Adjacent sequences:  A063494 A063495 A063496 * A063498 A063499 A063500

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Aug 01 2001

STATUS

approved

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Last modified February 23 07:28 EST 2018. Contains 299473 sequences. (Running on oeis4.)