Thanks to everyone who made a donation during our annual appeal! To see the list of donors, or make a donation, see the OEIS Foundation home page.
J. H. Conway, personal communication.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Table of n, a(n) for n=1..77.
Sequence in context: A153505 A088398 A083949 * A180012 A172504 A172502
Adjacent sequences: A007468 A007469 A007470 * A007472 A007473 A007474
N. J. A. Sloane.
Zeros inserted for consistency with A003634 by Sean A. Irvine, Jan 04 2018