|
Search: id:A081336
|
|
| |
|
| 1, 5, 29, 185, 1241, 8525, 59189, 412865, 2885681, 20186645, 141267149, 988751945, 6920909321, 48445302365, 339113927909, 2373787929425, 16616486808161, 116315321563685, 814206992665469, 5699448173817305, 39896134892198201
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
Binomial transform of A081336. 5th binomial transform of (1,0,4,0,16,0,64,....).
|
|
FORMULA
|
a(n)=(7^n+3^n)/2. a(n)=10a(n-1)-21a(n-2), a(0)=1, a(1)=5. G.f.: (1-5x)/((1-3x)(1-7x)). E.g.f. exp(5x)cosh(2x).
|
|
CROSSREFS
|
Cf. A081337.
Sequence in context: A137625 A083066 A139174 this_sequence A059231 A127846 A137573
Adjacent sequences: A081333 A081334 A081335 this_sequence A081337 A081338 A081339
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
Paul Barry (pbarry(AT)wit.ie), Mar 18 2003
|
|
|
Search completed in 0.002 seconds
|
