|
Search: id:A159925
|
|
| |
|
| 1, 3, 12, 61, 370, 2606, 20925, 188772, 1890773, 20822481, 250082522, 3253176309, 45567394330, 683783923476, 10944068960451, 186098265906832, 3350501663825617, 63671208559149815, 1273621946395366224
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
COMMENT
|
The sum of all terms in rows 1 through m of triangle A159924 is A159926(m). A159926(m) - A159926(m-1) = A159925(m), for m >= 2.
|
|
MAPLE
|
A159924 := proc(n, m) option remember ; local s; if n = m then 1; else s := add(add(procname(r, c), c=1..r), r=1..n-1) ; procname(n-1, m)+s ; fi; end: A159925 := proc(n) local m; add( A159924(n, m), m=1..n) ; end: seq(A159925(n), n=1..40) ; [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 29 2009]
|
|
CROSSREFS
|
A159924, A159926
Sequence in context: A078162 A002497 A161799 this_sequence A121694 A158691 A038171
Adjacent sequences: A159922 A159923 A159924 this_sequence A159926 A159927 A159928
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), Apr 26 2009
|
|
EXTENSIONS
|
More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 29 2009
|
|
|
Search completed in 0.002 seconds
|
