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A277907 a(n) = A007310(A277908(n)). 3

%I #11 Nov 07 2016 09:12:06

%S 5,7,11,13,17,19,41,43,59,61,67,71,97,101,103,107,109,113,127,131,137,

%T 139,149,151,179,181,191,193,197,199,227,229,269,271,277,281,307,311,

%U 313,317,347,349,379,383,419,421,431,433,439,443,461,463,487,491,499,503,599,601,617,619,643,647,739,743,823,827,853,857,859,863,877,881

%N a(n) = A007310(A277908(n)).

%C It seems that all terms are primes, and moreover, that all those primes occur in pairs with distance of 2 or 4. However, not all terms of A001359 are present.

%H Antti Karttunen, <a href="/A277907/b277907.txt">Table of n, a(n) for n = 1..7096</a>

%F a(n) = A007310(A277908(n)).

%o (Scheme) (define (A277907 n) (A007310 (A277908 n)))

%Y Cf. A000040, A001359, A007310, A118306, A277908, A277911.

%K nonn

%O 1,1

%A _Antti Karttunen_, Nov 05 2016

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Last modified March 29 11:14 EDT 2024. Contains 371278 sequences. (Running on oeis4.)