30644

Appears in sequences

• a(n) = floor(binomial(n,7)/8).at n=23A011844
• Smallest k > 0 with gcd(k, rev(k)) = n, where rev(k) is digit reversal of k, or 0 if no such k exists.at n=46A069554
• Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 11011-01110-00100 pattern in any orientation.at n=16A147487
• G.f.: Product_{n>0} ( (1+x^n)/(1-x^n) )^(n^3).at n=7A206623
• Number of (n+1)X(2+1) 0..2 arrays with the maximum plus the upper median of every 2X2 subblock equal.at n=2A236896
• Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the upper median of every 2X2 subblock equal.at n=1A236897
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the upper median of every 2X2 subblock equal.at n=7A236902
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the upper median of every 2X2 subblock equal.at n=8A236902