A068866 Triangular numbers k*(k+1)/2 such that A068865(k) = k*(k+1)/2.

1, 3, 6, 10, 28, 36, 45, 78, 91, 105, 136, 406, 465, 561, 666, 703, 946, 1081, 3240, 6555, 7260, 9045, 32640, 46971, 47586, 48828, 51360, 70876, 72390, 94395, 319600, 719400, 903840, 914628, 4862521, 5092836, 5112003, 5131206, 6898755, 7108335, 9122856

Offset

1,2

Links

Table of n, a(n) for n=1..41.

Crossrefs

Cf. A068855, A068865.

Sequence in context: A211231 A302094 A068818 * A137173 A116544 A110891

Adjacent sequences: A068863 A068864 A068865 * A068867 A068868 A068869

Keyword

base,nonn

Author

Amarnath Murthy, Mar 13 2002

Extensions

Missing 36 inserted and more terms from Sean A. Irvine, Mar 18 2024

Status

approved