A108224 - OEIS

A108224

Suppose you take the ten digits 0..9, arrange them in any order and then either concatenate adjacent ones or separate them with a plus or minus sign, e.g., 98-76+5-4-32+10 or 9-8-765+3041-2. The first expression totals to "1", the second example totals to "2275". This sequence lists the positive integers that cannot be expressed in this way.

99464, 99496, 99505, 99644, 99673, 99690, 99734, 99745, 99902, 99946, 99960, 99992, 100000, 100001, 100003, 100036, 100045, 100047, 100082, 100090, 100091, 100093, 100099, 100100, 100101, 100102, 100104, 100110, 100130, 100137, 100237

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..31.

Eric Harshbarger, Ten digit arithmetic.

CROSSREFS

Sequence in context: A339936 A348275 A138732 * A268417 A232188 A032428

Adjacent sequences: A108221 A108222 A108223 * A108225 A108226 A108227

KEYWORD

base,nonn

AUTHOR

Eric Harshbarger and Eric Angelini, Jun 16 2005

STATUS

approved