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; internal format)
OFFSET

0,5

FORMULA

T(n, k) = C(n, k) + 3C(n-2, k-1). G.f.: (1+3x^2y) / [1-x(1+y)]. - R. 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: A071856 A144221 A159570 * A173119 A050178 A171146

Adjacent sequences:  A028310 A028311 A028312 * A028314 A028315 A028316

KEYWORD

nonn,tabl

AUTHOR

Mohammad K. Azarian (ma3(AT)evansville.edu)

EXTENSIONS

More terms from Sam Alexander (pink2001x(AT)hotmail.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 16 11:25 EST 2012. Contains 205907 sequences.