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A107927 Smallest number m>n such that some digit of n and some digit of m sum up to 9. 0
9, 8, 7, 6, 5, 14, 13, 12, 10, 10, 18, 18, 17, 16, 15, 18, 18, 18, 19, 20, 27, 27, 27, 26, 25, 27, 27, 28, 31, 30, 36, 36, 36, 36, 35, 36, 37, 42, 41, 40, 45, 45, 45, 45, 45, 46, 50, 50, 50, 50, 54, 54, 54, 54, 55, 64, 63, 62, 61, 60, 63, 63, 63, 64, 65, 73, 73, 72, 71, 70, 72 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Cf. A107433 (slowest increasing sequence where some digit of a(n) and some digit of a(n+1) sum up to 9).

LINKS

Table of n, a(n) for n=0..70.

MATHEMATICA

bb={}; Do[id1=IntegerDigits[a]; le1=Length[id1]; Do[id2=IntegerDigits[b]; le2=Length[id2]; If[MemberQ[Flatten[Table[id1[[i]]+id2[[j]], {i, le1}, {j, le2}]], 9], bb=Append[bb, b]; Break[]], {b, a+1, 300}], {a, 0, 130}]; bb

CROSSREFS

Cf. A107433.

Sequence in context: A055120 A090671 A132673 * A019890 A066666 A021905

Adjacent sequences:  A107924 A107925 A107926 * A107928 A107929 A107930

KEYWORD

easy,nonn,base

AUTHOR

Zak Seidov, Jun 10 2005

STATUS

approved

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Last modified November 18 12:16 EST 2019. Contains 329261 sequences. (Running on oeis4.)