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A157793 Convolution of numbers of binary zeros and ones. 1
0, 1, 1, 3, 2, 6, 6, 11, 8, 15, 15, 25, 21, 29, 29, 41, 33, 44, 43, 61, 53, 66, 67, 89, 76, 88, 85, 107, 96, 112, 112, 139, 119, 135, 130, 161, 144, 165, 166, 205, 180, 197, 191, 227, 209, 235, 237, 283, 250, 267, 256, 295, 269, 295, 293, 343, 308, 329, 319, 365, 339 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

a(n) = SUM(A023416(i)*A000120(n-i): 0<=i<=n).

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 0..10000

PROG

(Haskell)

a157793 n = a157793_list !! n

a157793_list = f [head a023416_list] $ tail a023416_list where

   f zs (x:xs) = (sum $ zipWith (*) zs a000120_list) : f (x:zs) xs

-- Reinhard Zumkeller, Mar 31 2015

CROSSREFS

Cf. A000120, A023416.

Sequence in context: A286970 A023360 A154028 * A096375 A062200 A114208

Adjacent sequences:  A157790 A157791 A157792 * A157794 A157795 A157796

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Mar 06 2009

STATUS

approved

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Last modified August 22 02:44 EDT 2019. Contains 326169 sequences. (Running on oeis4.)