1,1

a(n) = A190874(n) at record term. For index of record term, see A202187.

Each term of A174641 corresponds with a term in A168425 such that if A174641(a(n) - 1) = A168425(m) then m of A168425 = n of A202187. Note that a(n) - 1 is the value of the index n of A174641.

Table of n, a(n) for n=1..19.

With n = 4, A202187(4)=42, and a(4) = 8. So, A190874(42)=8. However,

A174641(a(4)-1) = A174641(8-1) = A168425(A202187(4)) = A168425(42) = 509.

Sequence in context: A191984 A219958 A288753 * A247467 A032728 A078577

Adjacent sequences: A202183 A202184 A202185 * A202187 A202188 A202189

nonn

John W. Nicholson, Dec 13 2011

a(19) from John W. Nicholson, Jan 06 2014

approved