0,2

The first member of the (m,k) pairs are in A077259

a(n)=(-1+sqrt(8*b(n)+1))/2 where b(n) are the entries in A077261

a(n) = (sqrt(5*A000045(A007310(n))^2-4)-1)/2. - Vladeta Jovovic (vladeta(AT)Eunet.yu), Nov 02 2002

a(3)=(-1+sqrt(8*4950+1))/2=(-1+sqrt(39601))/2=(199-1)/2=99

Cf. A077259, A077260, A077261.

Sequence in context: A128102 A007838 A024167 this_sequence A058072 A027304 A070135

Adjacent sequences: A077259 A077260 A077261 this_sequence A077263 A077264 A077265

easy,nonn

Bruce Corrigan (scentman(AT)myfamily.com), Nov 01 2002