A260715 - OEIS

%I #12 Nov 12 2024 12:35:55

%S 11,13,17,23,25,29,37,41,43,47,53,55,61,67,71,73,77,83,89,91,97,101,

%T 103,107,115,119,121,127,131,133,143,145,149,151,157,161,167,173,175,

%U 179,181,187,193,197,203,205,209,211,221,223,227,233,235,239,247,251,253,257,263,265,271,277,281,283,287,293,299,301,307,311,313

%N Row 5 of A260717.

%H Antti Karttunen, <a href="/A260715/b260715.txt">Table of n, a(n) for n = 1..10000</a>

%H <a href="/index/Rec#order_49">Index entries for linear recurrences with constant coefficients</a>, signature (1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1).

%F Other identities. For all n >= 1:

%F a(1+(11*(n-1))) = A255415(n).

%o (Scheme) (define (A260715 n) (A260717bi 5 n)) ;; A260717bi given in A260717.

%Y Row 5 of A260717.

%Y Setwise difference of A260714 \ A255414.

%Y Cf. A255415 (only every eleventh term of this sequence, starting from 11).

%Y Differs from A003309(n+5) for the first time at n=12, as a(12) = 55, the first nonludic number to be removed at stage 5 of the sieve, which is missing from A003309.

%K nonn,changed

%O 1,1

%A _Antti Karttunen_, Jul 30 2015