|
Search: id:A111989
|
|
| |
|
| 1, 6, 36, 208, 1200, 6912, 39808, 229248, 1320192, 7602688, 43782144, 252131328, 1451966464, 8361541632, 48152199168, 277297463296, 1596892446720, 9196137086976, 52958442815488, 304975517319168, 1756284007219200
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
REFERENCES
|
Charles Jordan, Calculus of Finite Differences, Chelsea, 1965, p. 43. See the reference to L. Euler there.
|
|
FORMULA
|
A special four-term recurrence.
a(n)= 6*a(n-1)-8*a(n-3), a(-2)= 0 =a(-1), a(0)=1, (or a(j)=6^j, j=0, 1, 2).
|
|
CROSSREFS
|
Cf. A111990 (first convolution), A111991 (second convolution).
Sequence in context: A000551 A038157 A006812 this_sequence A064238 A014336 A027910
Adjacent sequences: A111986 A111987 A111988 this_sequence A111990 A111991 A111992
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
Wolfdieter Lang (wolfdieter.lang_AT_physik_DOT_uni-karlsruhe_DOT_de), Sep 12 2005
|
|
|
Search completed in 0.002 seconds
|
