|
|
A261532
|
|
Hall's sequence g_n.
|
|
0
|
|
|
|
OFFSET
|
3,1
|
|
LINKS
|
|
|
FORMULA
|
a(n) = g(n) where g(3) = 7 and g(n+1) = 2*(g(n)-1)*(1+2^n*(g(n)-1)) + 1.
|
|
PROG
|
(PARI) N=11; g=vector(N); g[3] = 7;
for (n=3, N-1, g[n+1] = 2*(g[n]-1)*(1+2^n*(g[n]-1))+1 );
vector(N-3, j, g[j+2])
(Magma) [n le 1 select 7 else 2*(Self(n-1)-1)*(1+2^(n+1)*(Self(n-1)-1)) + 1: n in [1..6]]; // Vincenzo Librandi, Aug 24 2015
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|