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A264933 a(0)=0; a(1)=1; a(2)=2; a(n) = a(n-1)^a(n-2)^a(n-3). 0
0, 1, 2, 2, 4, 256, 340282366920938463463374607431768211456 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
EXAMPLE
a(3) = a(2)^a(1)^a(0) = 2;
a(4) = a(3)^a(2)^a(1) = 2^2^1 = 4;
a(5) = a(4)^a(3)^a(2) = 4^2^2 = 256;
a(6) = a(5)^a(4)^a(3) = 256^4^2 = 340282366920938463463374607431768211456.
MATHEMATICA
RecurrenceTable[{a[0]==0, a[1]==1, a[2]==2, a[n]==a[n-1]^a[n-2]^a[n-3]}, a, {n, 6}]
PROG
(Magma) I:=[0, 1, 2]; [n le 2 select I[n] else Self(n-1)^Self(n-2)^Self(n-3): n in [0..6]];
(PARI) a(n) = if(n<3, n, a(n-1)^a(n-2)^a(n-3));
CROSSREFS
Cf. A051285.
Sequence in context: A134084 A267346 A372238 * A012858 A366756 A363842
KEYWORD
nonn
AUTHOR
Natan Arie Consigli, Dec 17 2015
STATUS
approved

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Last modified May 28 01:34 EDT 2024. Contains 372900 sequences. (Running on oeis4.)