A189726 Partial sums of A189723.

0, 1, 2, 3, 3, 4, 5, 5, 6, 7, 7, 8, 8, 9, 10, 11, 11, 12, 13, 13, 14, 14, 15, 16, 17, 17, 18, 19, 19, 20, 20, 21, 22, 23, 23, 24, 24, 25, 26, 27, 27, 28, 29, 29, 30, 31, 31, 32, 32, 33, 34, 35, 35, 36, 37, 37, 38, 38, 39, 40, 41, 41, 42, 42, 43, 44, 45, 45, 46, 47, 47, 48, 49, 49, 50, 50, 51, 52, 53, 53, 54

Offset

1,3

Comments

See A189723.

Links

Table of n, a(n) for n=1..81.

Formula

s(n)=s([(n+2)/3])+[(n+1)/3]-s([(n+1)/3])+[n/3], where s(0)=0, s(1)=0.

Mathematica

(See A189723.)

Crossrefs

Cf. A189723, A189724, A189725.

Sequence in context: A278617 A194640 A353086 * A093878 A317686 A156689

Adjacent sequences: A189723 A189724 A189725 * A189727 A189728 A189729

Keyword

nonn

Author

Clark Kimberling, Apr 26 2011

Status

approved