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A066644 a(n) = floor(surface area of a sphere with radius n). 5
12, 50, 113, 201, 314, 452, 615, 804, 1017, 1256, 1520, 1809, 2123, 2463, 2827, 3216, 3631, 4071, 4536, 5026, 5541, 6082, 6647, 7238, 7853, 8494, 9160, 9852, 10568, 11309, 12076, 12867, 13684, 14526, 15393, 16286, 17203, 18145, 19113, 20106, 21124, 22167 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
a(n) = floor(4*Pi*n^2).
MAPLE
A066644:=n->floor(4*Pi*n^2): seq(A066644(n), n=1..100); # Wesley Ivan Hurt, Sep 15 2015
MATHEMATICA
Table[ Floor[4Pi*n^2], {n, 50} ]
PROG
(PARI) { for (n=1, 1000, write("b066644.txt", n, " ", floor(4*Pi*n^2)) ) } \\ Harry J. Smith, Mar 16 2010
CROSSREFS
Sequence in context: A009932 A009933 A009930 * A009934 A009927 A009938
KEYWORD
easy,nonn
AUTHOR
Amarnath Murthy, Dec 29 2001
EXTENSIONS
More terms from Robert G. Wilson v, Jan 03 2002
STATUS
approved

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Last modified May 24 12:09 EDT 2024. Contains 372773 sequences. (Running on oeis4.)