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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A014428 Even elements in Pascal's triangle. 1
2, 4, 6, 4, 10, 10, 6, 20, 6, 8, 28, 56, 70, 56, 28, 8, 36, 84, 126, 126, 84, 36, 10, 120, 210, 252, 210, 120, 10, 330, 462, 462, 330, 12, 66, 220, 792, 924, 792, 220, 66, 12, 78, 286, 1716, 1716, 286, 78, 14, 364, 2002, 3432, 2002, 364, 14, 16, 120, 560, 1820 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..59.

EXAMPLE

Triangle begins:

2

4 6 4

10 10

MATHEMATICA

Select[ Flatten[ Table[ Binomial[ n, i ], {n, 0, 20}, {i, 0, n} ] ], EvenQ[ # ]& ]

CROSSREFS

Cf. A007318.

Sequence in context: A011176 A154542 A074320 * A180935 A151886 A278259

Adjacent sequences:  A014425 A014426 A014427 * A014429 A014430 A014431

KEYWORD

nonn,easy,tabf,less

AUTHOR

Mohammad K. Azarian

EXTENSIONS

More terms from Erich Friedman

Offset corrected by Mohammad K. Azarian, Nov 19 2008

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 16 18:24 EDT 2019. Contains 327116 sequences. (Running on oeis4.)