209304

Appears in sequences

• a(n) = f(n,4) where f is given in A034261.at n=16A034264
• Expansion of g.f.: (1+4*x)/(1-x)^7.at n=15A051946
• Column 3 of A061314.at n=8A061318
• 1/6 the number of (n+1)X9 0..2 arrays with every 2X2 subblock containing all three values.at n=0A183602
• T(n,k)=1/6 the number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock containing all three values.at n=28A183603
• Consider all 3 X 3 matrices M whose entries are the n-th to (n+8)-th primes prime(n), ..., prime(n+8), in any order. a(n) is the sum of the number of M such that det(M) is divisible by prime(n+i), for i from 0 to 8.at n=3A339105