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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A028313 Elements in the 5-Pascal triangle (by row). 15
1, 1, 1, 1, 5, 1, 1, 6, 6, 1, 1, 7, 12, 7, 1, 1, 8, 19, 19, 8, 1, 1, 9, 27, 38, 27, 9, 1, 1, 10, 36, 65, 65, 36, 10, 1, 1, 11, 46, 101, 130, 101, 46, 11, 1, 1, 12, 57, 147, 231, 231, 147, 57, 12, 1, 1, 13, 69, 204, 378, 462, 378, 204, 69, 13, 1, 1, 14, 82, 273, 582, 840, 840, 582 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..73.

FORMULA

T(n, k) = C(n, k) + 3C(n-2, k-1). G.f.: (1+3x^2y) / [1-x(1+y)]. - Ralf Stephan, Jan 31 2005

EXAMPLE

1;

1 1;

1 5 1;

1 6 6 1;

1 7 12 7 1;

...

CROSSREFS

Cf. A028275, A029653.

Sequence in context: A159570 A280374 A259975 * A173119 A050178 A297986

Adjacent sequences:  A028310 A028311 A028312 * A028314 A028315 A028316

KEYWORD

nonn,tabl

AUTHOR

Mohammad K. Azarian

EXTENSIONS

More terms from Sam Alexander (pink2001x(AT)hotmail.com)

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 October 13 20:38 EDT 2019. Contains 327981 sequences. (Running on oeis4.)