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First differences of the partition numbers of the primes.
1

%I #19 Feb 21 2017 02:38:06

%S 2,1,4,8,41,45,196,193,765,3310,2277,14795,22946,18678,61493,205177,

%T 501889,289685,1558184,2017516,1488484,7662961,9489819,26657456,

%U 83235005,81250196,56767824,159900439,110796851,309430388,3062487667,2050675209,5133105512

%N First differences of the partition numbers of the primes.

%C This is the first prime 2, followed by the first differences of the partition numbers of primes.

%H Alois P. Heinz, <a href="/A182739/b182739.txt">Table of n, a(n) for n = 1..1000</a>

%F a(1) = 2; a(n) = A000041(A000040(n)) - A000041(A000040(n-1)) for n>1.

%e a(5) = A000041(A000040(5)) - A000041(A000040(4)) = A000041(11) - A000041(7) = 56 - 15 = 41.

%p with(combinat):

%p a:= n-> `if`(n=1, 2, (x->x[1]-x[2])(map(numbpart@ithprime, [n, n-1]))):

%p seq(a(n), n=1..40); # _Alois P. Heinz_, Jan 27 2011

%t Range[40] // Prime // PartitionsP // Differences // Prepend[#, 2]& (* _Jean-François Alcover_, Feb 21 2017 *)

%Y Cf. A000040, A000041, A058698.

%K nonn

%O 1,1

%A _Omar E. Pol_, Jan 27 2011

%E More terms from _Alois P. Heinz_, Jan 27 2011