A060065 Smallest mode of the sequence { C(n-k,k), k=0..n/2 }.

0, 0, 0, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 20, 20, 20

Offset: 0

Author

N. J. A. Sloane, Apr 10 2001

Keywords

• nonn

Links

• S. M. Tanny and M. Zuker, On a unimodal sequence of binomial coefficients, Discrete Math. 9 (1974), 79-89.

Crossrefs

Cf. A073028.

Programs

Maple

A060065 := n->ceil( (5*n-3-sqrt(5*n^2+10*n+9))/10);

PARI

a(n)=(5*n-sqrtint(5*n^2+10*n+9)+6)\10 \\ Charles R Greathouse IV, Sep 22 2016