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A108926 Initial members of abundant quintuplets, i.e., values of n such that (n, n+2, n+4, n+6, n+8) are all abundant numbers. 8
2988, 4728, 9724, 18844, 22984, 30544, 35148, 39948, 45048, 50464, 55788, 56808, 58056, 58780, 69184, 78048, 81948, 85744, 101148, 106144, 108256, 109248, 117124, 134088, 139744, 139804, 152568, 171288, 174348, 175908, 182644, 189768, 197028 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Shyam Sunder Gupta, Table of n, a(n) for n = 1..5000

PROG

(PARI) is(n)=sigma(n, -1)>2 && sigma(n+2, -1)>2 && sigma(n+4, -1)>2 && sigma(n+6, -1)>2 && sigma(n+8, -1)>2 \\ Charles R Greathouse IV, Feb 21 2017

CROSSREFS

Cf. A005101.

Sequence in context: A252571 A231628 A231623 * A159731 A221725 A205241

Adjacent sequences:  A108923 A108924 A108925 * A108927 A108928 A108929

KEYWORD

nonn

AUTHOR

Jason Earls, Jul 19 2005

STATUS

approved

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Last modified February 17 12:32 EST 2020. Contains 331996 sequences. (Running on oeis4.)