OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..150
Wikipedia, Sexagesimal
Index entries for linear recurrences with constant coefficients, signature (60).
FORMULA
a(n) = A000400(n)*A011557(n) = A000351(n)*A001021(n) = A000302(n)*A001024(n) = A000244(n)*A009964(n). (Corrected by _Robert B Fowler_, Jan 25 2023)
From _Muniru A Asiru_, Nov 21 2018: (Start)
a(n) = 60^n.
a(n) = 60*a(n-1) for n > 0, a(0) = 1.
G.f.: 1/(1-60*x).
E.g.f: exp(60*x). (End)
a(n) = 1/a(-n) for all n in Z. - _Michael Somos_, Jan 01 2019
EXAMPLE
G.f. = 1 + 60*x + 3600*x^2 + 216000*x^3 + 12960000*x^4 + 77600000*x^5 + ... - _Michael Somos_, Jan 01 2019
MAPLE
[60^n$n=0..20]; # _Muniru A Asiru_, Nov 21 2018
MATHEMATICA
60^Range[0, 15] (* _Harvey P. Dale_, Jun 02 2011 *)
PROG
(Magma)[60^n: n in [0..20]]; // _Vincenzo Librandi_, May 02 2011
(PARI) a(n)=60^n \\ _Charles R Greathouse IV_, May 02 2011
(Maxima) A159991(n):=60^n$
makelist(A159991(n), n, 0, 30); /* _Martin Ettl_, Nov 05 2012 */
(PARI) a(n)=60^n \\ _Charles R Greathouse IV_, Jun 19 2015
(PARI) powers(60, 8) \\ _Charles R Greathouse IV_, Jun 19 2015
(GAP) List([0..20], n->60^n); # _Muniru A Asiru_, Nov 21 2018
(Python) for n in range(0, 20): print(60**n, end=', ') # _Stefano Spezia_, Nov 21 2018
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
_Reinhard Zumkeller_, May 01 2009
STATUS
approved