1,2

"Indices of ..." is equivalent to "starting values for ..."

a(n) = min { k | A138753(k) = A138755(n) }

Equals { m | A138753(k) < A138753(m) for all k<m }

(PARI) m=0; for( i=1, #A138753, A138753[i] > m | next; m=A138753[i]; print1(i", "))

Cf. A124123, A138750-A138755, A006877(analogue for Collatz problem).

Sequence in context: A039000 A059671 A119116 this_sequence A091076 A112595 A041075

Adjacent sequences: A138753 A138754 A138755 this_sequence A138757 A138758 A138759

more,nonn

M. F. Hasler (www.univ-ag.fr/~mhasler), Apr 01 2008