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A075788 If n can be written in the form r^i-s^j (see A074981), where r,s,i,j are integers with r>0, s>0, i>1, j>1 choose the representation with smallest r^i (in case of ties, minimize i and j); or if n is not of this form set r=s=i=j=0; sequence gives values of r. 2
3, 3, 2, 2, 3, 0, 4, 4, 5, 13, 3, 4, 7, 0, 8, 5, 5, 3, 3, 6, 5, 7, 3, 2, 5, 35, 6, 2, 15, 83, 16, 6, 7, 0, 18, 10, 8, 37, 8, 7, 7, 0, 22, 5, 7, 17, 2, 8, 9, 0, 10, 14, 27, 9, 8, 8, 11, 0, 30, 8, 5, 0, 12, 10, 9, 0, 34, 10, 13, 0, 14, 9, 9, 3, 10, 5, 9, 0, 2, 12, 15, 0, 42, 10, 11, 0, 16, 13, 11, 0, 10 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The zeros are only conjectures (cf. A074981).

Use 4^2 rather than 2^4, etc.

LINKS

Table of n, a(n) for n=1..91.

EXAMPLE

1 = 3^2 - 2^3, 2 = 3^3 - 5^2, 3 = 2^2 - 1^2, 4 = 2^3 - 2^2, etc.

CROSSREFS

Sequence in context: A096837 A139092 A021305 * A324080 A303934 A304031

Adjacent sequences:  A075785 A075786 A075787 * A075789 A075790 A075791

KEYWORD

nonn

AUTHOR

Zak Seidov, Oct 13 2002

EXTENSIONS

More terms from David Wasserman, Jan 23 2005

STATUS

approved

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Last modified February 16 12:48 EST 2019. Contains 320163 sequences. (Running on oeis4.)