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A075146 n-th perfect power - n-th prime, pp(n)-p(n). +0
1
-1, 1, 3, 2, 5, 12, 10, 13, 13, 20, 33, 44, 59, 78, 78, 75, 85, 108, 129, 145, 152, 164, 173, 200, 227, 242, 258, 293, 332, 371, 385, 398, 439, 486, 527, 578, 627, 678, 733, 788, 821, 843, 898, 963, 1028, 1097, 1120, 1146, 1217, 1292, 1367, 1442, 1487, 1513, 1592 (list; graph; listen)
OFFSET

1,3

COMMENT

Besides first 1, all other terms is positive. At n>16, the function pp(n)-p(n) is (apparently) monotonically increasing.

FORMULA

pp(n)-p(n).

EXAMPLE

pp(3)-p(3)= 8-5=3.

CROSSREFS

Cf. A001597.

Sequence in context: A107298 A093924 A130597 this_sequence A062941 A057674 A092935

Adjacent sequences: A075143 A075144 A075145 this_sequence A075147 A075148 A075149

KEYWORD

easy,sign

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Oct 11 2002

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Last modified September 8 13:07 EDT 2008. Contains 143486 sequences.


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