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.

A230067 Number of nX7 0..2 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j).

Table of values

n a(n)
1 0
2 3969
3 266805
4 137945025
5 43142680647
6 15615593045649
7 5392746297039195
8 1888668174848027049
9 658744922326993528365
10 230036351941714961424609
11 80301571203375381579772923
12 28034704123779041409942781569

List of values

[0, 3969, 266805, 137945025, 43142680647, 15615593045649, 5392746297039195, 1888668174848027049, 658744922326993528365, 230036351941714961424609, 80301571203375381579772923, 28034704123779041409942781569]

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

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