login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A021409 Decimal expansion of 1/405. 0
0, 0, 2, 4, 6, 9, 1, 3, 5, 8, 0, 2, 4, 6, 9, 1, 3, 5, 8, 0, 2, 4, 6, 9, 1, 3, 5, 8, 0, 2, 4, 6, 9, 1, 3, 5, 8, 0, 2, 4, 6, 9, 1, 3, 5, 8, 0, 2, 4, 6, 9, 1, 3, 5, 8, 0, 2, 4, 6, 9, 1, 3, 5, 8, 0, 2, 4, 6, 9, 1, 3, 5, 8, 0, 2, 4, 6, 9, 1, 3, 5, 8, 0, 2, 4, 6, 9, 1, 3, 5, 8, 0, 2, 4, 6, 9, 1, 3, 5 (list; constant; graph; refs; listen; history; internal format)
OFFSET

0,3

FORMULA

a(n)=(1/162)*{-35*(n mod 9)-17*[(n+1) mod 9]-17*[(n+2) mod 9]+163*[(n+3) mod 9]-35*[(n+4) mod 9]-17*[(n+5) mod 9]-17*[(n+6) mod 9]-17*[(n+7) mod 9]+163*[(n+8) mod 9]}-8*[C(2*n,n) mod 2], with n>=0 [From Paolo P. Lava (paoloplava(AT)gmail.com), Nov 11 2009]

CROSSREFS

Sequence in context: A030149 A083146 A074108 * A176461 A084407 A114526

Adjacent sequences:  A021406 A021407 A021408 * A021410 A021411 A021412

KEYWORD

nonn,cons

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 15 17:46 EST 2012. Contains 205835 sequences.