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A050943
The sum of 2 or more consecutive nonzero triangular numbers.
3
4, 9, 10, 16, 19, 20, 25, 31, 34, 35, 36, 46, 49, 52, 55, 56, 64, 74, 80, 81, 83, 84, 85, 100, 109, 110, 116, 119, 120, 121, 130, 136, 144, 145, 155, 161, 164, 165, 166, 169, 185, 196, 199, 200, 202, 210, 216, 219, 220, 225, 230, 235, 244, 251
OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..7350 (missing terms inserted by Sean A. Irvine, Apr 28 2022)
MATHEMATICA
nn=20; With[{trnos=Accumulate[Range[nn]]}, Union[Flatten[Table[ Total/@ Partition[ trnos, n, 1], {n, 2, nn}]]]] (* Harvey P. Dale, Jul 25 2014 *)
CROSSREFS
Cf. A050942.
Sequence in context: A329476 A164098 A007936 * A010406 A010451 A080064
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jan 02 2000
STATUS
approved