A082973 - OEIS

A082973

Fibonacci numbers which are of the form Sum{i=1..k} prime(i) for some k.

2, 5, 2584

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OFFSET

0,1

LINKS

EXAMPLE

5 is in the sequence because 5 is both Fibonacci(5) and 2+3. 2584 is Fibonacci(18) and 2+3+5+7+11+...+151+157 (first 37 primes)

PROG

(PARI) { ps=2; pc=1; fc=1; while (fc<50, while (ps<=fibonacci(fc), if (ps==fibonacci(fc), print1(ps"; "fc", ")); ps+=prime(pc++)); fc++) }

CROSSREFS

KEYWORD

nonn,bref

AUTHOR

Jon Perry, May 28 2003

STATUS

approved