id:A082183 - OEIS Search Results

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Smallest k>0 such that T(n)+T(k)=T(m), for some m, T(i) being the triangular numbers, n>1.

+0
3

2, 5, 9, 3, 5, 27, 10, 4, 8, 14, 17, 9, 5, 21, 135, 12, 14, 35, 6, 9, 17, 30, 12, 18, 10, 7, 54, 21, 23, 495, 42, 14, 26, 8, 49, 27, 15, 20, 98, 30, 32, 80, 9, 19, 35, 62, 45, 17, 20, 14, 99, 39, 10, 18, 54, 24, 44, 78, 81, 45, 25, 85, 153, 11, 50, 125, 20, 29, 53, 94, 97 (list; graph; listen)

	OFFSET	`2,1`
	PROGRAM	`(PARI) for(n=2, 100, t=n(n+1)/2:for(k=1, 10^9, u=t+k(k+1)/2:v=floor(sqrt(2u)): if(v(v+1)/2==u, print1(k", "):break)))`
	CROSSREFS	`Cf. A072522, values of m are in A082184.` `Adjacent sequences: A082180 A082181 A082182 this_sequence A082184 A082185 A082186` `Sequence in context: A021390 A019802 A011432 this_sequence A111474 A111761 A021798`
	KEYWORD	`nonn`
	AUTHOR	`Ralf Stephan (ralf(AT)ark.in-berlin.de), Apr 06 2003`

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Last modified October 13 02:37 EDT 2008. Contains 145008 sequences.

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