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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..4880

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

Adjacent sequences:  A050940 A050941 A050942 * A050944 A050945 A050946

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 02 2000

STATUS

approved

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Last modified November 25 08:38 EST 2020. Contains 338623 sequences. (Running on oeis4.)