A136447 Numbers which are not pseudoperfect: Complement of A005835.

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

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-François 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