A171754 - OEIS

%I #11 Dec 17 2017 08:02:51

%S 4,10,74,548,29937,221207,12077476,89241150,4872401723,1965667148572,

%T 14524424832624,5859571186401306,319921746765027475,

%U 2363919734114673281,129065644309503369812,52068797165145438985917,21006052018952571274782967,155214896785095995435367107

%N Hyperbolic sine of the prime numbers, rounded to the nearest integer.

%F a(n) = round(sinh(A000040(n))).

%e For n=1: A000040(1) = 2, sinh(2) = 3.62686..., round(3.62686...) = 4.

%o (MATLAB) digits(50);clear phi;PP=primes(100);for i=1:length(PP);phi(i,:)=vpa(['round(sinh(' num2str(PP(i)) '))']);end;disp(phi)

%K nonn

%O 1,1

%A _Joost de Winter_, Dec 17 2009