|
|
A014253
|
|
a(n) = b(n)^2, where b(n) = b(n-1)^2 + b(n-2)^2 (A000283).
|
|
4
|
|
|
|
OFFSET
|
0,4
|
|
LINKS
|
|
|
FORMULA
|
|
|
MATHEMATICA
|
RecurrenceTable[{a[n]==(a[n-1]+a[n-2])^2, a[0]==0, a[1]==1}, a, {n, 0, 10}] (* G. C. Greubel, Jun 18 2019 *)
|
|
PROG
|
(Magma) [0] cat [n le 2 select 1 else (Self(n-1)+Self(n-2))^2: n in [1..10]]; // Vincenzo Librandi, Apr 02 2015
(PARI) m=10; v=concat([0, 1], vector(m-2)); for(n=3, m, v[n]=(v[n-1] + v[n-2])^2); v \\ G. C. Greubel, Jun 18 2019
(Sage)
def a(n):
if (n==0): return 0
elif (n==1): return 1
else: return (a(n-1) + a(n-2))^2
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|