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 A138594 Sums of 6 or more consecutive nonnegative integers. 2
 15, 21, 27, 28, 33, 35, 36, 39, 42, 44, 45, 49, 51, 52, 54, 55, 56, 57, 60, 63, 65, 66, 68, 69, 70, 72, 75, 76, 77, 78, 81, 84, 85, 87, 88, 90, 91, 92, 93, 95, 98, 99, 100, 102, 104, 105, 108, 110, 111, 112, 114, 115, 116, 117, 119, 120, 121, 123, 124, 125, 126, 129 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Also, the numbers of the form s*k+A000217(k-1), s>=0, k>=6. [From R. J. Mathar, Jul 31 2008] LINKS Robert Israel, Table of n, a(n) for n = 1..10000 EXAMPLE 0+1+2+3+4+5=15, 1+2+3+4+5+6=21, 2+3+4+5+6+7=27, 1+2+3+4+5+6+7=28, ... MAPLE N:= 1000: # to get all terms <= N sort(convert({seq(seq(b*(2*a+b-1)/2, a=0..floor(N/b - (b+1)/2)), b=6..floor((sqrt(1+8*N)-1)/2))}, list)); # Robert Israel, Mar 11 2016 MATHEMATICA Array[r, 9]; k=0; For[i=0, i<=77, a=i*5+10; For[j=i+5, j<=77, a=a+j; k++; r[k]=a; j++ ]; i++ ]; q=Union[Array[r, k]]; StringTake[ToString[q], 123] CROSSREFS Sequence in context: A211375 A326387 A217078 * A131651 A134642 A072974 Adjacent sequences: A138591 A138592 A138593 * A138595 A138596 A138597 KEYWORD nonn AUTHOR Vladimir Joseph Stephan Orlovsky, May 13 2008 EXTENSIONS More terms from Vladimir Joseph Stephan Orlovsky, Mar 07 2010 Name edited by Robert Israel, Mar 11 2016 STATUS approved

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Last modified February 1 17:02 EST 2023. Contains 359993 sequences. (Running on oeis4.)