A249408 Numbers in A249406 that are not of the form m*(m+1).

1, 399, 8099, 33123, 93635, 159200, 256035, 492803, 864899, 1416099, 2196323, 3261635, 4674243, 6502499, 8820899, 12531599, 16257023, 20757135, 26132543, 32489999, 39942399, 48608783, 58614335, 65593800, 73205135, 86713343, 102009999, 119246399, 138579983

Offset: 1

Author

Reinhard Zumkeller, Oct 31 2014

Keywords

• nonn

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..150

Crossrefs

Cf. A249406, A005369, A002378, subsequence of A078358.

Programs

Haskell

import Data.List ((\\))
a249408 n = a249408_list !! (n-1)
a249408_list = filter ((== 0) . a005369) a249406_list

Formula

A005369(a(n)) = 0.