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Rotatable partitions.
(Formerly M0238 N0081)
3

%I M0238 N0081 #25 Jul 11 2021 18:42:37

%S 1,1,1,2,2,2,4,6,6,8,11,13,17,24,28,36,47,56,69,94,114,138,177,218,

%T 262,333,410,496,615,755,906,1120,1372,1648,2006,2455,2939,3557

%N Rotatable partitions.

%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="/A002722/a002722.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.

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

%K nonn,more

%O 1,4

%A _N. J. A. Sloane_

%E a(17)-a(38) from _R. J. Mathar_, May 29 2016