OFFSET
1,1
COMMENTS
Also: the numbers of the form s*k+A000217(k-1), s>=0, k>=5. Changing the lower limit to k from 5 to 2, 4 or 6 also defines A138591, A138592 and A138594. [From R. J. Mathar, Jul 31 2008]
LINKS
Ray Chandler, Table of n, a(n) for n = 1..10000
EXAMPLE
0+1+2=3+4=10, 1+2+3+4+5=15, 2+3+4+5+6=20, 1+2+3+4+5+6=21,...
MATHEMATICA
Array[r, 9]; k=0; For[i=0, i<=55, a=i*4+6; For[j=i+4, j<=66, a=a+j; k++; r[k]=a; j++ ]; i++ ]; q=Union[Array[r, k]]; StringTake[ToString[q], 123]
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladimir Joseph Stephan Orlovsky, May 13 2008
EXTENSIONS
More terms from Vladimir Joseph Stephan Orlovsky, Mar 07 2010
STATUS
approved