Increments of arithmetic progression of at least 6 terms having the same value of phi in A050518.
30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360, 390, 420, 450, 480, 510, 540
2 seqfan posts
Thu Aug 13 14:39:45 CEST 2009 [seqfan] Re: Rant on Maple code