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A093391 [n/16] + [(n+1)/16] + [(n+2)/16] + [(n+3)/16]. 4
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 6, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 10, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 14, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 18, 19, 20, 20, 20, 20 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,15

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 0..1000

FORMULA

a(n) = +2*a(n-1) -a(n-2) -a(n-4) +2*a(n-5) -a(n-6) -a(n-8) +2*a(n-9) -a(n-10) -a(n-12) +2*a(n-13) -a(n-14). G.f. x^13/ ( (1+x^4)*(x^8+1)*(x-1)^2 ). - R. J. Mathar, Mar 22 201

MATHEMATICA

Total/@(Floor/@(Partition[Range[0, 90], 4, 1]/16)) (* Harvey P. Dale, Sep 21 2013 *)

PROG

(Haskell)

a093391 n = sum $ map ((flip div 16) . (+ n)) [0..3]

-- Reinhard Zumkeller, Oct 10 2013

CROSSREFS

Cf. A004524, A093390, A093392.

Cf. A054900.

Sequence in context: A065686 A158411 A065680 * A210964 A029135 A196933

Adjacent sequences:  A093388 A093389 A093390 * A093392 A093393 A093394

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Mar 28 2004

STATUS

approved

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Last modified October 24 06:43 EDT 2017. Contains 293836 sequences.