A194698 a(n) = floor((n - 1)/12) - floor((n^2 - 1)/(24*n)).

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4

Offset

1,37

Comments

A similar formula for prime indices is mentioned in the abstract of the Folson-Kent-Ono paper (See A194699).

Links

Table of n, a(n) for n=1..85.

Mathematica

Table[Floor[(n-1)/12]-Floor[(n^2-1)/(24n)], {n, 90}] (* Harvey P. Dale, Oct 23 2021 *)

Crossrefs

Cf. A000041, A194699.

Sequence in context: A211661 A111972 A073458 * A105519 A111891 A296076

Adjacent sequences: A194695 A194696 A194697 * A194699 A194700 A194701

Keyword

nonn,easy

Author

Omar E. Pol, Jan 18 2012

Status

approved