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A065398

Fibonacci numbers whose digits sum to a prime.

2, 3, 5, 21, 34, 89, 377, 610, 2584, 17711, 75025, 121393, 196418, 514229, 832040, 1346269, 5702887, 63245986, 165580141, 433494437, 1134903170, 2971215073, 20365011074, 53316291173, 86267571272, 591286729879, 2504730781961

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OFFSET

1,1

LINKS

Harry J. Smith, Table of n, a(n) for n = 1..100

FORMULA

a(n) = A000045(A178837(n)).

MATHEMATICA

Select[Fibonacci[Range[100]], PrimeQ[Total[IntegerDigits[#]]]&] (* Harvey P. Dale, Mar 24 2017 *)

PROG

(PARI) { for (m=1, 10^2, my(f=fibonacci(m)); if (isprime(sumdigits(f)), print1(f, ", "))) } \\ Harry J. Smith, Oct 18 2009

CROSSREFS

Cf. A000045, A178837 (corresponding indices).

Sequence in context: A076383 A024766 A058959 * A084838 A051694 A113650

Adjacent sequences: A065395 A065396 A065397 * A065399 A065400 A065401

KEYWORD

base,easy,nonn

AUTHOR

Jason Earls, Nov 22 2001

STATUS

approved

URL: https://oeis.org/A065398

⇱ A065398 - OEIS