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A136447 Numbers which are not pseudoperfect: Complement of A005835. 4
1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 19, 21, 22, 23, 25, 26, 27, 29, 31, 32, 33, 34, 35, 37, 38, 39, 41, 43, 44, 45, 46, 47, 49, 50, 51, 52, 53, 55, 57, 58, 59, 61, 62, 63, 64, 65, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 79, 81, 82, 83, 85, 86, 87, 89, 91, 92, 93, 94, 95 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Contains the weird numbers 70, 836, ... (A006037), so is different from the set A005100 of deficient numbers.

A065205(a(n)) = A210455(a(n)) = 0. - Reinhard Zumkeller, Jan 21 2013

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

MATHEMATICA

ppQ[n_] := AnyTrue[Subsets[Divisors[n] // Most], Total[#] == n&];

Select[Range[100], Not[ppQ[#]]&] (* Jean-Fran├žois Alcover, Aug 03 2018 *)

PROG

(Haskell)

a136447 n = a136447_list !! (n-1)

a136447_list = filter ((== 0) . a210455) [1..]

-- Reinhard Zumkeller, Jan 21 2013

CROSSREFS

Cf. A006037, A005100, A005835, A023196.

Sequence in context: A228869 A088725 A094520 * A005100 A051772 A049093

Adjacent sequences:  A136444 A136445 A136446 * A136448 A136449 A136450

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 06 2008

EXTENSIONS

Edited by M. F. Hasler, Jul 18 2016

STATUS

approved

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Last modified November 26 01:22 EST 2020. Contains 338631 sequences. (Running on oeis4.)