1,2

If a(k) is the first occurrence of a prime p(r), the r-th prime then a(k+1) = p(r-1) + 1,... a(k+m) = p(r-1) + m until a(k + p(r)-p(r-1))= p(r) again.( the second and the last occurrence of p(r)).

Cf. A076271.

Sequence in context: A136537 A153928 A119446 this_sequence A162620 A082997 A085970

Adjacent sequences: A076915 A076916 A076917 this_sequence A076919 A076920 A076921

nonn

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Oct 17 2002