A093555 Number of non-prime-powers between consecutive prime-powers.

0, 0, 0, 0, 1, 0, 0, 1, 1, 2, 0, 1, 3, 1, 1, 1, 1, 0, 4, 3, 1, 3, 1, 3, 5, 1, 2, 2, 3, 1, 5, 1, 1, 5, 7, 3, 1, 3, 1, 3, 7, 3, 1, 0, 2, 5, 1, 9, 1, 5, 5, 3, 1, 3, 5, 1, 9, 1, 3, 1, 11, 11, 3, 1, 3, 5, 1, 1, 7, 4, 0, 5, 5, 1, 5, 3, 1, 5, 3, 13, 3, 1, 3, 13, 5, 5, 3, 1, 3, 5, 1, 5, 5, 5, 3, 5, 7, 3, 7, 9

Offset

1,10

Comments

a(n) = A000961(n+1)-A000961(n)-1 = A057820(n)-1.

Links

Table of n, a(n) for n=1..100.

Crossrefs

Cf. A046933.

Sequence in context: A356154 A261209 A340006 * A065432 A094184 A078805

Adjacent sequences: A093552 A093553 A093554 * A093556 A093557 A093558

Keyword

nonn

Author

Reinhard Zumkeller, Jul 09 2004

Status

approved