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A013633 nextprime(n) - prevprime(n). 11

%I

%S 3,2,4,2,6,4,4,4,6,2,6,4,4,4,6,2,6,4,4,4,10,6,6,6,6,6,8,2,8,6,6,6,6,6,

%T 10,4,4,4,6,2,6,4,4,4,10,6,6,6,6,6,12,6,6,6,6,6,8,2,8,6,6,6,6,6,10,4,

%U 4,4,6,2,8,6,6,6,6,6,10,4,4

%N nextprime(n) - prevprime(n).

%H T. D. Noe, <a href="/A013633/b013633.txt">Table of n, a(n) for n=3..2000</a>

%F a(n) = A151800(n) - A151799(n) = A007918(n+1) - A007917(n-1). - _M. F. Hasler_, Sep 09 2015

%e a(3) = nextprime(3) - prevprime(3) = 5 - 2 = 3: This shows that here the variants 2 (A151800 and A151799) of the nextprime and precprime functions are used, rather than the variants A007918 and A007917. - _M. F. Hasler_, Sep 09 2015

%p [ seq(nextprime(i)-prevprime(i),i=3..100) ];

%o (PARI) A013633(n)=nextprime(n+1)-precprime(n-1) \\ _M. F. Hasler_, Sep 09 2015

%Y Cf. A151800, A007918; A151799, A007917.

%K nonn

%O 3,1

%A _N. J. A. Sloane_.

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Last modified February 17 21:35 EST 2020. Contains 332006 sequences. (Running on oeis4.)