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A123272 Number of primes between consecutive terms of A105575. 0
1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..105.

FORMULA

a(n) = PrimePi(A105575(n+1)) - PrimePi(A105575(n)) - 1.

CROSSREFS

Cf. A105575.

Sequence in context: A145379 A258869 A128810 * A266623 A246142 A091219

Adjacent sequences:  A123269 A123270 A123271 * A123273 A123274 A123275

KEYWORD

easy,nonn

AUTHOR

Giovanni Teofilatto, Oct 10 2006

EXTENSIONS

Edited and extended by Ray Chandler, Oct 17 2006

STATUS

approved

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Last modified October 20 15:29 EDT 2019. Contains 328267 sequences. (Running on oeis4.)