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A225353 Numbers having no partition into distinct squarefree divisors. 3
4, 8, 9, 16, 18, 20, 24, 25, 27, 28, 32, 36, 40, 44, 45, 48, 49, 50, 52, 54, 56, 63, 64, 68, 72, 75, 76, 80, 81, 88, 90, 92, 96, 98, 99, 100, 104, 108, 112, 116, 117, 120, 121, 124, 125, 126, 128, 135, 136, 140, 144, 147, 148, 150, 152, 153, 160, 162, 164 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A225245(a(n)) = 0.

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..1000

PROG

(Haskell)

import Data.List (elemIndices)

a225353 n = a225353_list !! (n-1)

a225353_list = map (+ 1) $ elemIndices 0 a225245_list

CROSSREFS

Cf. A225354 (complement).

Sequence in context: A242663 A160053 A140612 * A034023 A086368 A034024

Adjacent sequences:  A225350 A225351 A225352 * A225354 A225355 A225356

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, May 05 2013

STATUS

approved

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Last modified June 22 12:22 EDT 2021. Contains 345375 sequences. (Running on oeis4.)