A390669 Minimum determinant of a n X n Hankel matrix with entries in {0,1}.

0, -1, -2, -3, -5, -9, -32, -56, -117, -315, -1458, -2673, -7776, -22386, -131072

Offset

1,3

Links

Table of n, a(n) for n=1..15.

David Consiglio, Jr., Python

Example

Examples achieving the minimum, given as a binary string of length 2n-1 whose length-n sliding windows give the successive rows of the matrix:
 1  0
 2  010
 3  01101
 4  1011101
 5  010111010
 6  00010110011
 7  0010111001011
 8  101011100101111
 9  00100101110011010
10  0011010111001001011
11  000101101110001011011
12  10010110111000101101111
13  0001010110011111010100110
14  000110011010111110001001010
15  00010011010111100010011010111

Crossrefs

Cf. A096390, which covers the case of maximum determinant.

Sequence in context: A094206 A278119 A276410 * A118998 A003432 A179332

Adjacent sequences: A390666 A390667 A390668 * A390670 A390671 A390672

Keyword

sign,more

Author

Jeffrey Shallit, Jan 15 2026

Extensions

a(13)-a(15) from David Consiglio, Jr., Jan 23 2026

Status

approved