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A078375 Smallest prime factor of numbers which can be written as sum of a positive square and a positive cube. 1
2, 5, 3, 2, 2, 17, 2, 2, 2, 31, 3, 2, 37, 43, 2, 2, 2, 3, 3, 5, 2, 2, 73, 2, 2, 2, 89, 7, 2, 101, 2, 113, 2, 2, 127, 2, 3, 2, 3, 5, 2, 2, 2, 7, 2, 2, 3, 2, 3, 5, 3, 2, 197, 2, 2, 2, 7, 2, 223, 3, 2, 2, 233, 241, 2, 2, 257, 2, 2, 5, 269, 2, 283, 17, 2, 2, 3, 2, 2, 3, 5, 2, 337, 2, 347, 2, 3, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n)=A020639(A055394(n)).

LINKS

Table of n, a(n) for n=1..88.

CROSSREFS

Cf. A078376.

Sequence in context: A076840 A328823 A188923 * A065261 A130848 A222760

Adjacent sequences:  A078372 A078373 A078374 * A078376 A078377 A078378

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Nov 25 2002

STATUS

approved

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Last modified April 10 17:00 EDT 2021. Contains 342852 sequences. (Running on oeis4.)