A061390 Use same rules as A047988. Sequence gives smallest numbers which require n steps to reach 2.

3, 5, 7, 14, 38, 172, 823, 6185, 87223, 1940494

Offset

1,1

Comments

Some values calculated by Joseph Devincentis.

a(11) > 5000000. - David Wasserman, Jun 21 2002

Links

Table of n, a(n) for n=1..10.

Erich Friedman, Math. Magic

Crossrefs

Cf. A047984.

Sequence in context: A309832 A319784 A346503 * A227685 A051445 A002181

Adjacent sequences: A061387 A061388 A061389 * A061391 A061392 A061393

Keyword

nonn,more

Author

Jason Earls, Jun 09 2001

Extensions

More terms from David Wasserman, Jun 21 2002

Status

approved