|
Search: id:A093858
|
|
|
| A093858 |
|
a(0) = 1, a(1)= 2, a(n) = {a(n+1)-a(n-1)}/n, or a(n+1) = n*a(n) +a(n-1). |
|
+0
2
|
|
| 1, 2, 3, 8, 27, 116, 607, 3758, 26913, 219062, 1998471, 20203772, 224239963, 2711083328, 35468323227, 499267608506, 7524482450817, 120890986821578, 2062671258417643, 37248973638339152, 709793170386861531
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
FORMULA
|
a(n) = -2*(BesselI[n, -2]*(2 BesselK[0, 2] - BesselK[1, 2]) + (-2 BesselI[0, 2] + BesselI[1, -2])*BesselK[n, 2]) - Ryan Propper (rpropper(AT)stanford.edu), Sep 14 2005
|
|
MATHEMATICA
|
a = 1; b = 2; Print[a]; Print[b]; Do[c = n*b + a; Print[c]; a = b; b = c, {n, 1, 30}] (Propper)
|
|
CROSSREFS
|
Sequence in context: A041503 A086613 A121401 this_sequence A080568 A091339 A006277
Adjacent sequences: A093855 A093856 A093857 this_sequence A093859 A093860 A093861
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 19 2004
|
|
EXTENSIONS
|
More terms from Ryan Propper (rpropper(AT)stanford.edu), Sep 14 2005
|
|
|
Search completed in 0.002 seconds
|
