(35S) OEIS A157502, Evens Without Squares Formula

Threaded Mode | Linear Mode

(35S) OEIS A157502, Evens Without Squares Formula

12-07-2014, 07:54 AM (This post was last modified: 06-15-2017 01:58 PM by Gene.)

Post: #1

Gerald H Offline

Senior Member

Posts: 1,627
Joined: May 2014

(35S) OEIS A157502, Evens Without Squares Formula

Sequence of even numbers without the squares, OEIS A157502

2, 6, 8, 10, 12, 14, 18, 20, 22, 24, 26, 28, 30, 32, 34, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 66, 68…..

For index N solve the equation

G = IP( SQRT( 2 * N ) + 0.5 ) ► R + 2 * N – RMDR( R , 2 )

for G.

For input

N = 1E10

The calculator returns

G = 20,000,141,420

Anyone recognize 141,42……?

« Next Oldest | Next Newest »

Messages In This Thread

(35S) OEIS A157502, Evens Without Squares Formula - Gerald H - 12-07-2014 07:54 AM

RE: HP 35S: OEIS A157502, Evens Without Squares Formula - Joe Horn - 12-08-2014, 12:23 AM

User(s) browsing this thread: 1 Guest(s)