cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-2 of 2 results.

A068870 Number of polyhypercubes or 4-dimensional polyominoes with n cells (regarding mirror-images as identical).

Original entry on oeis.org

1, 1, 1, 2, 7, 26, 147, 1019, 8699, 82535, 846042, 9078720
Offset: 0

Views

Author

Franklin T. Adams-Watters, Mar 29 2002

Keywords

Links

Crossrefs

Excluding a(0), 140th row of A366766.
Cf. A049429, A049430, A255487.

Extensions

a(10) and a(11) from Don Reble, Feb 25 2015. - N. J. A. Sloane, Mar 01 2015

A290305 Number of 5-dimensional polyominoes with n cells (regarding mirror-images as distinct).

Original entry on oeis.org

1, 1, 1, 2, 7, 26, 154, 1172, 12049, 148508, 2061893, 30545504
Offset: 0

Views

Author

Sean A. Irvine, Jul 26 2017

Keywords

Crossrefs

Cf. A049429, A049430, A006761 (one-sided), A255487 (4-dimensional case).

Formula

a(n) = A006761(n) + A068870(n).
Showing 1-2 of 2 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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