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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A159928 a(m) = the sum of the terms of row m of triangle A159927. 2
1, 3, 15, 91, 641, 5147, 46433, 465081, 5121789, 61513799, 800196799, 11208394387, 168193068805, 2691956450679, 45775335405729, 824136306116113, 15661462041469817, 313277888390065739, 6579708440058166031 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

A159928(m) = -A075374(m+4)+A075374(m+3), for n >= 1. -A075374(m+4) = the sum of all terms of triangle A159927 in rows 1 through m.

PROG

(MAGMA) S:=[1]; T:=S; s:=1; for m in [2..19] do T:=[ n lt m select T[n]+s else s: n in [1..m] ]; t:=&+T; s+:=t; Append(~S, t); end for; S; [From Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jun 02 2009]

CROSSREFS

A159927, A075374

Sequence in context: A099251 A171790 A006632 * A020018 A124553 A020108

Adjacent sequences:  A159925 A159926 A159927 * A159929 A159930 A159931

KEYWORD

nonn

AUTHOR

Leroy Quet, Apr 26 2009

EXTENSIONS

More terms from Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jun 02 2009

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 14 22:58 EST 2012. Contains 205685 sequences.