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A110350
Least sum (n+1) + (n+2) + ...+(n+k) >= (n(n+1)/2), the n-th triangular number.
0
2, 3, 9, 11, 21, 24, 38, 42, 46, 65, 70, 93, 99, 105, 133, 140, 172, 180, 216, 225, 234, 275, 285, 330, 341, 352, 402, 414, 468, 481, 539, 553, 567, 630, 645, 712, 728, 744, 816, 833, 909, 927, 1007, 1026, 1045, 1130, 1150, 1239, 1260, 1281, 1375, 1397, 1495
OFFSET
1,1
EXAMPLE
a(4) = 5+6 = 11 > 10.
a(7) = 8+9+10+11 = 38 > 28, while 8+9+10 = 27 < 28.
CROSSREFS
Sequence in context: A257027 A271548 A369338 * A057569 A177950 A049618
KEYWORD
easy,nonn
AUTHOR
Amarnath Murthy, Jul 21 2005
EXTENSIONS
Corrected and extended by Emeric Deutsch, Aug 01 2005
STATUS
approved