1,2

The rule "jump over next smth" can be varied. In the A075695 the example: "jump over next second prime" is given.

a(1)=1, a(n) = 2 nextprime(a(n-1))-a(n-1).

a(1)=1; next prime (smallest larger than a(1))=2; "jump over" it: 2+(2-1)=3; a(2)=3; next prime (smallest larger than a(2))=5; "jump over" it: 5+(5-3)=7; a(7)=31; next prime (smallest larger than a(7))=37; "jump over" it: 37+(37-31)=43.

a(1) := 1; a(n)=2*nextprime(a(n-1))-a(n-1);

Cf. A075695.

Sequence in context: A089432 A111294 A092899 this_sequence A144751 A138847 A077777

Adjacent sequences: A075691 A075692 A075693 this_sequence A075695 A075696 A075697

easy,nonn

Zak Seidov (zakseidov(AT)yahoo.com), Sep 26 2002