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A008478 n = Product p_j^k_j = Product k_j^p_j; p_j in A000040. 7
1, 4, 16, 27, 72, 108, 432, 800, 3125, 6272, 12500, 21600, 30375, 50000, 84375, 121500, 169344, 225000, 247808, 337500, 486000, 750141, 823543, 1350000, 1384448, 3000564, 3294172, 6690816, 12002256, 13176688, 19600000, 22235661, 37380096 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Fixed points of A008477.

LINKS

Table of n, a(n) for n=1..33.

PROG

(PARI) for(n=2, 10^8, if(n==prod(i=1, omega(n), component(component(factor(n), 2), i)^component(component(factor(n), 1), i)), print1(n, ", ")))

CROSSREFS

Cf. A000040, A008477.

Sequence in context: A227993 A072873 A072653 * A201009 A111260 A067688

Adjacent sequences:  A008475 A008476 A008477 * A008479 A008480 A008481

KEYWORD

nonn

AUTHOR

Olivier Gérard

EXTENSIONS

More terms from David W. Wilson

STATUS

approved

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Last modified October 15 20:04 EDT 2019. Contains 328037 sequences. (Running on oeis4.)