A165775 n + (least square >= n), i.e., n + A048761(n).

0, 2, 6, 7, 8, 14, 15, 16, 17, 18, 26, 27, 28, 29, 30, 31, 32, 42, 43, 44, 45, 46, 47, 48, 49, 50, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 146

Offset

0,2

Links

Harvey P. Dale, Table of n, a(n) for n = 0..1000

Formula

A165775 = A001477 + A048761

Mathematica

Table[n+Ceiling[Sqrt[n]]^2, {n, 0, 70}] (* Harvey P. Dale, Feb 04 2019 *)

Prog

(PARI) A165775(n)=n+(sqrtint(n-1)+1)^2

Crossrefs

Sequence in context: A026311 A063291 A088225 * A258826 A157671 A196747

Adjacent sequences: A165772 A165773 A165774 * A165776 A165777 A165778

Keyword

easy,nonn

Author

M. F. Hasler, Oct 05 2009

Status

approved