Stuart, Ed: Nice work! I hope you will update the entries in the OEIS and create any new ones as appropriate. There's a new version of the OEIS as of two days ago. I'll post an official announcement here soon. The new URL for the OEIS is http://oeis.org [To contribute, you first need to register with the wiki part of the oeis: go to oeis.org/wiki, register (enter your full name in the top two windows, etc., then you get a password). Then go to the main database, oeis.org, and login with same name and password.] Best regards Neil