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A115945 Numbers that cannot be written as a sum of distinct factorials. 3
4, 5, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 28, 29, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Complement of A059590; A115944(a(n)) = 0.

LINKS

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

Index entries for sequences related to factorial numbers

MATHEMATICA

A059590 = Table[ Reverse[id = IntegerDigits[n, 2]].Range[ Length[id]]!, {n, 0, 20}]; Complement[ Range[ Last[A059590]], A059590] (* Jean-Fran├žois Alcover, Jun 19 2012 *)

PROG

(Haskell)

import Data.List (elemIndices)

a115945 n = a115945_list !! (n-1)

a115945_list = elemIndices 0 $ map a115944 [0..]

-- Reinhard Zumkeller, Dec 04 2011

CROSSREFS

Sequence in context: A263828 A092961 A177711 * A084750 A092027 A199134

Adjacent sequences:  A115942 A115943 A115944 * A115946 A115947 A115948

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Feb 02 2006

STATUS

approved

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Last modified September 25 16:16 EDT 2017. Contains 292499 sequences.