88776

Appears in sequences

• Numbers k such that k and k^2 use only the digits 0, 1, 6, 7 and 8.at n=12A136876
• Numbers k such that k and k^2 use only the digits 1, 2, 6, 7 and 8.at n=14A137014
• Numbers k such that k and k^2 use only the digits 1, 3, 6, 7 and 8.at n=12A137038
• Numbers k such that k and k^2 use only the digits 1, 4, 6, 7 and 8.at n=19A137052
• Numbers k such that k and k^2 use only the digits 1, 5, 6, 7 and 8.at n=13A137060
• Numbers k such that k and k^2 use only the digits 1, 6, 7 and 8.at n=2A137064
• Numbers k such that k and k^2 use only the digits 1, 6, 7, 8 and 9.at n=11A137065
• Number of (n+1)X(n+1) -8..8 symmetric matrices with every 2X2 subblock having sum zero and two, three or four distinct values.at n=3A211473
• Number of (w,x,y,z) with all terms in {0,...,n} and at least one of these conditions holds: w<R, x>R, y>R, z>R, where R = max{w,x,y,z} - min{w,x,y,z}.at n=17A212754
• Number of compositions of n with weakly increasing differences.at n=42A325546
• Irregular triangle read by rows: T(n,k) = [x^k]p_n(x), where (p_n(x)/x^(3n)) * exp(-1/x^2) is the n-th derivative of exp(-1/x^2), n >= 1, 0 <= k <= 2*n-2.at n=33A344031
• a(n) = Sum_{k=0..floor(n/3)} binomial(n,k)^2 * binomial(n-2*k,k).at n=10A383525