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Indices of prime Padovan numbers: values of k such that A000931(k+5) is prime.
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%I #16 Nov 10 2024 05:47:09

%S 3,4,5,7,8,14,19,30,37,84,128,469,666,1262,1573,2003,2210,2289,4163,

%T 5553,6567,8561,11230,18737,35834,44259,536485,727734

%N Indices of prime Padovan numbers: values of k such that A000931(k+5) is prime.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/IntegerSequencePrimes.html">Integer Sequence Primes</a>.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/PadovanSequence.html">Padovan Sequence</a>.

%F a(n) = A152870(n) - 5. - _Amiram Eldar_, Nov 10 2024

%Y Cf. A000931, A100891, A152870.

%K nonn,more,changed

%O 1,1

%A _Eric W. Weisstein_, Oct 05 2005

%E a(27) from _Eric W. Weisstein_, May 22 2009

%E a(28) from _Eric W. Weisstein_, Apr 10 2011