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A261646 Row lengths in A261644. 5

%I #7 Aug 31 2015 21:37:32

%S 1,1,1,3,5,7,15,27,49,90,171,326,613,1174,2255,4333,8386,16213,31457,

%T 61097,118577,230322,447767,870570,1693887,3297343,6423347,12523562,

%U 24435171,47707012,93215393,182260604,356622869,698284551,1368195878,2682527954,5262729874,10330704931

%N Row lengths in A261644.

%C First differences of A261396;

%C also row lengths in A261712.

%F a(n) = A261396(n) - A261396(n-1).

%o (Haskell)

%o a261646 = length . a261644_row

%Y Cf. A261644, A261712, A261396.

%K nonn

%O 1,4

%A _Reinhard Zumkeller_, Aug 31 2015

%E a(21)-a(38) from _Chai Wah Wu_, Aug 31 2015

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)