A261727 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A261727

Length of longest prefix of n-th row in A261712 coinciding with row n+1.

2

1, 0, 0, 2, 0, 3, 0, 0, 0, 25, 46, 90, 172, 141, 275, 601, 1102, 2199, 4150

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

OFFSET

1,4

COMMENTS

A261712(n+1,k) = A261712(n,k) for k = 1 .. a(n).

LINKS

Table of n, a(n) for n=1..19.

PROG

(Haskell)

a261727 n = a261727_list !! (n-1)

a261727_list = map (length . takeWhile (== 0)) $

zipWith (zipWith (-)) a261712_tabf $ tail a261712_tabf

CROSSREFS

Cf. A261712, A261646, A261416.

Sequence in context: A035229 A348019 A285982 * A234579 A309332 A109362

Adjacent sequences: A261724 A261725 A261726 * A261728 A261729 A261730

KEYWORD

nonn,more

AUTHOR

Reinhard Zumkeller, Aug 31 2015

STATUS

approved