A169899 Carryless sum of {distinct numbers i in the range 1 <= i <= n such that there is a number j in the range 1 <= j <= n for which the carryless product i*j equals n}.

1, 3, 4, 7, 9, 6, 8, 1, 0, 11, 12, 13, 14, 15, 16, 17, 18, 19, 10, 44, 22, 48, 24, 42, 26, 67, 28, 63, 20, 44, 42, 40, 48, 46, 44, 42, 40, 48, 46, 63, 62, 61, 60, 69, 68, 8, 66, 8, 64, 55, 52, 53, 8, 4, 54, 55, 58, 0, 0, 64, 20, 66, 24, 68, 28, 21, 22, 25, 26, 88, 82, 86, 80, 84, 88, 82

Offset

1,2

Comments

Counted without multiplicity.

Links

Table of n, a(n) for n=1..76.

David Applegate, Marc LeBrun and N. J. A. Sloane, Carryless Arithmetic (I): The Mod 10 Version.

Index entries for sequences related to carryless arithmetic

Crossrefs

Cf. A000005, A169891-A169899.

Sequence in context: A101715 A249751 A169893 * A328040 A075773 A324495

Adjacent sequences: A169896 A169897 A169898 * A169900 A169901 A169902

Keyword

nonn,base

Author

David Applegate, Marc LeBrun and N. J. A. Sloane, Jul 11 2010

Status

approved