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.

Previous Showing 21-22 of 22 results.

A177241 First differences of A177240.

Original entry on oeis.org

0, 1, 4, 4, 16, 4, 16
Offset: 0

Views

Author

Omar E. Pol, May 05 2010

Keywords

Comments

Question: Is this the same as A102376 but starting with zero? (See also the main question in the entry A177240).

Links

Crossrefs

Cf. A102376, A116520, A139250, A139251, A160121.

A255150 Partial sums of A253086.

Original entry on oeis.org

1, 5, 10, 22, 26, 42, 62, 110, 127, 151, 187, 267, 279, 327, 387, 531, 571, 627, 735, 935, 991, 1063, 1203, 1403, 1559, 1735, 1967, 2335, 2475, 2707, 3043, 3483, 3799, 4103, 4491, 5035, 5351, 5695, 6059, 6523, 6983, 7407, 7915, 8499, 8947, 9435, 10215, 11023, 11711, 12335, 13127, 14247, 14983, 15767, 16627, 17867, 18743, 19831, 20931
Offset: 0

Views

Author

Omar E. Pol, Feb 15 2015

Keywords

Comments

Also, total number of cubic ON cells after n generations in a three-dimensional cellular automaton in which A253086(n) gives the number of cubic ON cells in the n-th level of the structure starting from the top. An ON cell remains ON forever. The structure looks like an irregular stepped pyramid.

Links

Crossrefs

Cf. A116520, A245542, A253086, A253908, A255048.
Previous Showing 21-22 of 22 results.

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

Content is available under The OEIS End-User License Agreement.