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A110350 Least sum (n+1) + (n+2) + ...+(n+k) >= (n(n+1)/2), the n-th triangular number. +0
1
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 (list; graph; listen)
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: A074338 A111319 A109658 this_sequence A057569 A049618 A057292

Adjacent sequences: A110347 A110348 A110349 this_sequence A110351 A110352 A110353

KEYWORD

easy,nonn

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jul 21 2005

EXTENSIONS

Corrected and extended by Emeric Deutsch (deutsch(AT)duke.poly.edu), Aug 01 2005

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Last modified November 22 20:51 EST 2009. Contains 167312 sequences.


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