Difference between 2^n and the product of primes less than or equal to n.

Terms

a(0) =0a(1) =1a(2) =2a(3) =2a(4) =10a(5) =2a(6) =34a(7) =-82a(8) =46a(9) =302a(10) =814a(11) =-262a(12) =1786a(13) =-21838a(14) =-13646a(15) =2738a(16) =35506a(17) =-379438a(18) =-248366a(19) =-9175402a(20) =-8651114a(21) =-7602538a(22) =-5505386a(23) =-214704262a(24) =-206315654a(25) =-189538438a(26) =-155984006a(27) =-88875142a(28) =45342586a(29) =-5932822318