102854

Appears in sequences

• Number of 2 X 2 non-singular integer matrices with entries from {0,...,n}.at n=17A062801
• Row sums of unsigned triangle |A128495|=|S(2;n,m)| (sums of squares of Chebyshev's S-polynomials).at n=13A128496
• Number of -3..3 arrays x(0..n-1) of n elements with sum zero and with zeroth through n-1st differences all nonzero.at n=8A200033