|
Search: id:A073055
|
|
|
| A073055 |
|
a(n) = product of first n digits in the decimal expansion of Pi, ignoring decimal point. |
|
+0
2
|
|
| 1, 3, 3, 12, 12, 60, 540, 1080, 6480, 32400, 97200, 486000, 3888000, 34992000, 244944000, 2204496000, 6613488000, 13226976000, 39680928000, 317447424000, 1269789696000, 7618738176000, 15237476352000, 91424858112000
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
33rd digit of Pi = 0, so a(33), a(34), .... = 0. - Philip Bergonio (percyweasley99(AT)yahoo.com), Feb 24 2003
|
|
EXAMPLE
|
Pi=3.141592653589793... so a(0)=1, a(1) = 3, a(2) = 3*1=3, a(3)=3*1*4=12, a(4)=3*1*4*1=12 and so on.
|
|
MATHEMATICA
|
FoldList[Times, 1, First[RealDigits[N[Pi, 50]]]] (Cunningham)
|
|
CROSSREFS
|
Cf. A000796.
Sequence in context: A065957 A032308 A117856 this_sequence A074850 A075780 A078666
Adjacent sequences: A073052 A073053 A073054 this_sequence A073056 A073057 A073058
|
|
KEYWORD
|
easy,nonn,base
|
|
AUTHOR
|
Y. Kelly Itakura (yitkr(AT)mta.ca), Aug 22 2002
|
|
EXTENSIONS
|
Corrected and extended by Gabriel Cunningham (gcasey(AT)mit.edu), Oct 25 2004
|
|
|
Search completed in 0.002 seconds
|
