A002723 - OEIS

%I M0272 N0095 #28 Oct 22 2023 16:31:34

%S 1,1,1,1,2,2,3,3,5,6,8,9,11,14,19,22,28,34,44,52,63,78,99,119,144,178,

%T 219,265

%N Number of rotatable partitions of [n].

%D N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%H R. J. Mathar, <a href="/A002723/a002723.java.txt">Java source code</a>.

%H E. M. Wright, <a href="http://dx.doi.org/10.1112/jlms/s1-43.1.501">Rotatable partitions</a>, J. London Math. Soc., 43 (1968), 501-505, q'(4,inf,n).

%H E. M. Wright, <a href="/A002722/a002722.pdf">Rotatable partitions</a>, J. London Math. Soc., 43 (1968), 501-505. [Annotated scanned copy]

%Y Cf. A002722.

%K nonn,more

%O 1,5

%A _N. J. A. Sloane_

%E a(17)-a(28) from _R. J. Mathar_, May 29 2016