A083088 - OEIS

A083088

First column of table A083087.

1, 2, 4, 6, 7, 9, 11, 12, 14, 16, 18, 19, 21, 23, 24, 26, 28, 30, 31, 33, 35, 36, 38, 40, 41, 43, 45, 47, 48, 50, 52, 53, 55, 57, 59, 60, 62, 64, 65, 67, 69, 70, 72, 74, 76, 77, 79, 81, 82, 84, 86, 88, 89, 91, 93, 94, 96, 98, 100, 101, 103, 105, 106, 108, 110, 111, 113, 115

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OFFSET

0,2

COMMENTS

It appears that A188937 gives the positions of 0 in the zero-one sequence A188037; complement of A080754. [From Clark Kimberling, Mar 19 2011]

LINKS

Table of n, a(n) for n=0..67.

FORMULA

a(n) = floor(n*x/(x-1)) + 1, n>=0, where x=1+sqrt(2).

a(n) = floor(n/sqrt(2)) + n + 1.

MATHEMATICA

f[n_] := Floor[n/Sqrt@2 + n + 1]; Array[f, 68, 0]