A189635 Partial sums of A189632.

0, 0, 1, 1, 1, 2, 3, 3, 3, 3, 3, 4, 4, 4, 5, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 12, 12, 12, 12, 12, 13, 13, 13, 14, 15, 15, 15, 16, 16, 16, 16, 16, 17, 17, 17, 18, 19, 19, 19, 19, 19, 20, 20, 20, 21, 21, 21, 22, 22, 22, 23, 24, 24, 24, 24, 24, 25, 25, 25, 26, 27, 27, 27, 27

Offset: 1

Author

Clark Kimberling, Apr 24 2011

Keywords

• nonn

Comments

See A189632.

Crossrefs

Cf. A189632, A189633, A189634.

Programs

Mathematica

(See A189632.)

Formula

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