0,2
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Guo-Niu Han, Enumeration of Standard Puzzles
(MAGMA) [4^n - n: n in [0..35]]: // Vincenzo Librandi, May 13 2011
Sequence in context: A131262 A171499 A006502 * A100295 A091701 A151237
Adjacent sequences: A024034 A024035 A024036 * A024038 A024039 A024040
nonn
N. J. A. Sloane (njas(AT)research.att.com).