OFFSET
1,1
EXAMPLE
a(1) = 2 - 3 = -1;
a(2) = 2 - 3 - 5 = -6.
MATHEMATICA
FoldList[#1 - #2 &, 2, Prime@ Range[2, 39]] (* Michael De Vlieger, Feb 12 2017 *)
PROG
(Python) from sympy import prime, isprime
sub=2
print(sub, end=", ")
for i in range (3, 200, 2):
if (isprime(i)==True):
sub=sub-i
print(sub, end=", ")
(PARI) lista(nn) = {s = prime(1); print1(s, ", "); for (n=2, nn, s -= prime(n); print1(s, ", "); ); } \\ Michel Marcus, Feb 12 2017
CROSSREFS
KEYWORD
sign
AUTHOR
Frederic Isenmann, Feb 12 2017
STATUS
approved