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A101422 Minimal number of primes needed to sum to Fibonacci(n). +0
3
1, 1, 1, 2, 1, 2, 2, 2, 1, 2, 1, 3, 2, 3, 1, 2, 3, 2, 2, 3, 1, 2, 3, 3, 2, 3, 1, 2, 3, 3, 2, 3, 3, 2, 3, 3, 2, 3, 3, 2, 1, 3, 2, 3, 1, 2, 3, 3, 2, 3, 3, 2, 3, 3, 2, 3, 3, 2, 3, 3, 2, 3, 3, 2, 3, 3, 2, 3, 3, 2, 3, 3, 2, 3, 3, 2, 3, 3, 2, 3, 1, 2, 3, 3, 2, 3, 3, 2, 3, 3, 2, 3, 3, 2, 3, 3, 2, 2, 3, 2, 3, 3, 2, 2, 3 (list; graph; listen)
OFFSET

3,4

FORMULA

a(n) = A051034(A000045(n)).

EXAMPLE

a(5)=1 because Fibonacci(5)=5 is a prime.

a(6)=2 because Fibonacci(6)=8 = 3+5.

a(7)=1 because Fibonacci(7)=13 is a prime.

a(14)=3 because Fibonacci(14)=377 = 2+2+373.

CROSSREFS

Cf. A000045, A051034, A001605, A102106, A102107.

Adjacent sequences: A101419 A101420 A101421 this_sequence A101423 A101424 A101425

Sequence in context: A105220 A083654 A029428 this_sequence A070304 A083952 A043529

KEYWORD

nonn

AUTHOR

Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Jan 17 2005

EXTENSIONS

Edited and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jan 18 2005

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.


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