|
Search: id:A121810
|
|
|
| A121810 |
|
a(n) = a(n - 1)*a(n - 2) + a(n - 2)*a(n - 3) + a(n - 1)*a(n - 3). |
|
+0
1
|
|
| 0, 1, 1, 1, 3, 7, 31, 331, 12795, 4642051, 60935796571, 283646808320375611, 17285560913056915909539455163, 4902995236325455290013100337511909917402705547
(list; graph; listen)
|
|
|
OFFSET
|
1,5
|
|
|
MATHEMATICA
|
a[0] = 0; a[1] = 1; a[2] = 1; a[n_] := a[n] = a[n - 1]*a[n - 2] + a[n - 2]*a[n - 3] + a[n - 1]*a[n - 3] Table[a[n], {n, 0, 15}]
|
|
CROSSREFS
|
Sequence in context: A105767 A063896 A074047 this_sequence A081475 A123212 A070231
Adjacent sequences: A121807 A121808 A121809 this_sequence A121811 A121812 A121813
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Roger Bagula (rlbagulatftn(AT)yahoo.com), Aug 30 2006
|
|
EXTENSIONS
|
Edited by njas, Oct 08 2006
|
|
|
Search completed in 0.002 seconds
|
