59015

Appears in sequences

• Number of irreducible positions of size n in Montreal solitaire.at n=11A007049
• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Lucas numbers), t = (F(2), F(3), ...).at n=17A024472
• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Lucas numbers), t = (F(2), F(3), F(4), ...).at n=16A025092
• [ exp(8/21)*n! ].at n=7A030847
• Truncated square pyramid numbers: a(n) = Sum_{k = n..2*n} k^2.at n=29A050409
• Tetraprimes (or products of exactly four distinct prime numbers) that are the sum of two successive tetraprimes.at n=28A380348