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A114595 Triangle of the numbers of unique-valued sequences of all lengths (from 1 to 2n-1) consisting of unit matrices (="matrix units") of order n. 1
1, 4, 6, 4, 9, 24, 48, 60, 30, 16, 60, 192, 480, 840, 840, 336, 25, 120, 520, 1920, 5700, 12600, 18480, 15120, 5040, 36, 210, 1140, 5520, 22920, 78120, 206640, 393120, 483840, 332640, 95040 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

First entry of each row is obviously n^2 and the last entries of each row are the terms of A001761.

LINKS

Table of n, a(n) for n=1..36.

A. Blazhevski and P. Sokoloski, Conceptual Introduction to Unique-valued Sequences, Proceedings of the III Congress of Mathematicians of Macedonia (2005), preprint.

Aleksandar Blazhevski - Cane, First 10 rows [Broken link]

EXAMPLE

T(n,1) = a(n^2 - 2n) = n^2.

CROSSREFS

Cf. A097635, A001761.

Sequence in context: A088739 A088740 A088738 * A256415 A143545 A328045

Adjacent sequences:  A114592 A114593 A114594 * A114596 A114597 A114598

KEYWORD

nonn,tabl

AUTHOR

Aleksandar Blazhevski - Cane (CaneB(AT)MT.Net.Mk), Dec 12 2005

STATUS

approved

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Last modified March 29 15:16 EDT 2020. Contains 333107 sequences. (Running on oeis4.)