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A085253 Numbers having no representation as sum of two powerful numbers (A001694). 6
1, 3, 4, 6, 7, 11, 14, 15, 19, 21, 22, 23, 27, 30, 38, 39, 42, 46, 47, 49, 51, 55, 56, 60, 62, 66, 67, 69, 70, 71, 75, 77, 78, 79, 83, 84, 86, 87, 92, 93, 94, 95, 102, 103, 105, 107, 110, 111, 114, 115, 118, 119, 120, 123, 131, 138, 139, 142, 143, 147, 151, 154 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

A085252(a(n))=0; complement of A076871.

LINKS

Table of n, a(n) for n=1..62.

Eric Weisstein's World of Mathematics, Powerful Number

CROSSREFS

Different from A075434.

Sequence in context: A079249 A306678 A075434 * A207525 A240208 A073906

Adjacent sequences:  A085250 A085251 A085252 * A085254 A085255 A085256

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jun 23 2003

STATUS

approved

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Last modified January 17 12:18 EST 2020. Contains 330958 sequences. (Running on oeis4.)