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A261442 Number of binary strings of length n+6 such that the smallest number whose binary representation is not visible in the string is 6. 2
0, 2, 6, 15, 32, 64, 120, 218, 385, 668, 1142, 1933, 3245, 5415, 8992, 14876, 24534, 40362, 66263, 108597, 177714, 290454, 474195, 773433, 1260447, 2052608, 3340437, 5433105, 8832176, 14351131, 23309037, 37844339, 61423189, 99662849, 161665292, 262176955 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (4,-4,-2,4,-1,2,-2,-1,1).

FORMULA

a(n) = A261019(n+6,6).

G.f.: (x^2+2*x-2)*x/((x+1)*(x^2+x-1)*(x^3+x-1)*(x-1)^3). - Alois P. Heinz, Aug 19 2015

PROG

(Haskell)

a261442 n = a261019' (n + 6) 6

CROSSREFS

Column k=6 of A261019.

Sequence in context: A290068 A289935 A289969 * A078406 A327598 A258348

Adjacent sequences:  A261439 A261440 A261441 * A261443 A261444 A261445

KEYWORD

nonn,easy

AUTHOR

Reinhard Zumkeller, Aug 18 2015

EXTENSIONS

More terms from Alois P. Heinz, Aug 19 2015

STATUS

approved

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Last modified August 7 16:11 EDT 2020. Contains 336276 sequences. (Running on oeis4.)