A105339 - OEIS

A105339

a(n) = n*(n+1)/2 mod 1024.

0, 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 190, 210, 231, 253, 276, 300, 325, 351, 378, 406, 435, 465, 496, 528, 561, 595, 630, 666, 703, 741, 780, 820, 861, 903, 946, 990, 11, 57, 104, 152, 201, 251, 302, 354, 407, 461, 516, 572, 629

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OFFSET

0,3

COMMENTS

Periodic with period length 2048. - Ray Chandler, Apr 18 2025

LINKS

Table of n, a(n) for n=0..57.

Index entries for linear recurrences with constant coefficients, order 2047.

MATHEMATICA

Mod[Accumulate[Range[0, 100]], 1024] (* Harvey P. Dale, Jun 30 2017 *)

CROSSREFS

See A105198 for further information.