17979

Appears in sequences

• Spiral sieve using Fibonacci numbers.at n=20A005621
• When squared gives number composed just of the digits 1, 2, 3, 4.at n=28A061677
• a(n) = 2*n*(n+1)*(n+2)/3 + (-1)^n.at n=29A179783
• Numbers n such that 4n+1 is a palindromic prime.at n=34A192261
• Number of nXnXn triangular 0..1 arrays with each element equal to at least two neighbors, containing at least one 1 and with new values 0..1 introduced in row major order.at n=6A192887
• Number of partitions p of n such that (number of numbers in p of form 3k+2) = (number of numbers in p of form 3k).at n=43A241741
• Number of non-isomorphic strict multiset partitions (sets of multisets) of weight n with empty intersection.at n=10A319077
• Number of compositions (ordered partitions) of n into an even number of primes.at n=30A339408