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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: A035199 A035229 A285982 * A234579 A109362 A085246

Adjacent sequences:  A261724 A261725 A261726 * A261728 A261729 A261730

KEYWORD

nonn,more

AUTHOR

Reinhard Zumkeller, Aug 31 2015

STATUS

approved

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Last modified March 24 19:48 EDT 2019. Contains 321448 sequences. (Running on oeis4.)