1,2

No term is divisible by 4, see comments in A098058.

Table of n, a(n) for n=1..74.

a(n) = A098058(n+1)-A098058(n).

(PARI) lista(n) = for(x=1, n, z=(prime(x+1)-prime(x)); if(z%4, print1(z, ", "))) \\ Michel Marcus, Jun 24 2015

Cf. A098058.

Sequence in context: A284121 A198102 A097466 * A141624 A134413 A134201

Adjacent sequences: A259308 A259309 A259310 * A259312 A259313 A259314

nonn

Zak Seidov, Jun 24 2015

approved