A002722 Rotatable partitions.

1, 1, 1, 2, 2, 2, 4, 6, 6, 8, 11, 13, 17, 24, 28, 36, 47, 56, 69, 94, 114, 138, 177, 218, 262, 333, 410, 496, 615, 755, 906, 1120, 1372, 1648, 2006, 2455, 2939, 3557

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• more

References

• N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
• N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

• R. J. Mathar, Java source code
• E. M. Wright, Rotatable partitions, J. London Math. Soc., 43 (1968), 501-505.
• E. M. Wright, Rotatable partitions, J. London Math. Soc., 43 (1968), 501-505. [Annotated scanned copy]

Extensions

a(17)-a(38) from R. J. Mathar, May 29 2016