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A109806 Admirable numbers such that the subtracted divisor is square. 0
20, 56, 104, 368, 464, 650, 836, 992, 1952, 8415, 11096, 16256, 17816, 28544, 31815, 45356, 77744, 83312, 91388, 98048, 113072, 122624, 128768, 130304, 254012, 351351, 388076, 507392, 522752, 537248, 698528, 780975, 791264, 1081568 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..34.

EXAMPLE

a(2)=56 because 1+2+7+8+14+28-4 = 56 and the subtracted divisor is square.

CROSSREFS

Cf. A111592.

Sequence in context: A144521 A044122 A044503 * A216267 A012483 A051872

Adjacent sequences:  A109803 A109804 A109805 * A109807 A109808 A109809

KEYWORD

nonn

AUTHOR

Jason Earls, Aug 16 2005

STATUS

approved

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Last modified February 20 12:57 EST 2019. Contains 320327 sequences. (Running on oeis4.)