|
Search: id:A052173
|
|
| |
|
| 1, 1, 0, 1, 0, 1, 1, 0, 2, 0, 1, 0, 3, 0, 2, 1, 0, 4, 0, 5, 0, 1, 0, 5, 0, 9, 0, 5, 1, 0, 6, 0, 14, 0, 14, 0, 1, 0, 7, 0, 20, 0, 28, 0, 14, 1, 0, 8, 0, 27, 0, 48, 0, 42, 0, 1, 0, 9, 0, 35, 0, 75, 0, 90, 0, 42, 1, 0, 10, 0, 44, 0, 110, 0, 165, 0, 132, 0, 1, 0, 11, 0, 54, 0, 154, 0, 275, 0, 297, 0
(list; table; graph; listen)
|
|
|
OFFSET
|
0,9
|
|
|
LINKS
|
R. K. Guy, Catwalks, Sandsteps and Pascal Pyramids, J. Integer Seqs., Vol. 3 (2000), #00.1.6
W. F. Klostermeyer, M. E. Mays, L. Soltes and G. Trapp, A Pascal rhombus, Fibonacci Quarterly, 35 (1997), 318-328.
|
|
FORMULA
|
a(n, k) =a(n-1, k-2)+a(n-1, k) with a(0, 0)=1 and a(n, k)=0 if k < 0 or k > n.
|
|
EXAMPLE
|
1; 1 0; 1 0 1; 1 0 2 0; 1 0 3 0 2; 1 0 4 0 5 0; 1 0 5 0 9 0 5; ...
|
|
CROSSREFS
|
See A008315 (the main entry for this triangle) for more information.
Reflection of A053121.
Sequence in context: A120616 A108044 A104477 this_sequence A124305 A087073 A106844
Adjacent sequences: A052170 A052171 A052172 this_sequence A052174 A052175 A052176
|
|
KEYWORD
|
nonn,easy,tabl
|
|
AUTHOR
|
njas, Jan 26 2000
|
|
EXTENSIONS
|
More terms from Henry Bottomley (se16(AT)btinternet.com), Aug 23 2001
|
|
|
Search completed in 0.002 seconds
|
