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A078386 Squarefree kernels of numbers which can be written as sum of a positive square and a positive cube. 2
2, 5, 3, 10, 6, 17, 6, 26, 14, 31, 33, 6, 37, 43, 22, 10, 26, 57, 21, 65, 34, 6, 73, 38, 10, 82, 89, 91, 10, 101, 6, 113, 122, 42, 127, 2, 129, 134, 141, 145, 74, 30, 38, 161, 82, 170, 57, 174, 177, 185, 21, 14, 197, 102, 206, 26, 217, 110, 223, 15, 226, 58, 233, 241 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n)=A007947(A055394(n)).

LINKS

Table of n, a(n) for n=1..64.

EXAMPLE

3^2+3^3 = A055394(11) = 36, a(12) = A007947(A055394(11)) = A007947(36) = A007947(2^2*3^2) = 2*3 = 6.

CROSSREFS

Cf. A078387.

Sequence in context: A064664 A323637 A349637 * A163254 A277696 A143121

Adjacent sequences:  A078383 A078384 A078385 * A078387 A078388 A078389

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Nov 25 2002

STATUS

approved

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Last modified January 19 06:18 EST 2022. Contains 350464 sequences. (Running on oeis4.)