187352

Appears in sequences

• Number of (1,1) pairs occurring at depth 3n of the Fibonacci tree.at n=7A305573
• a(n) is the determinant of the 2 X 2 matrix whose entries (when read by rows) are the n-th primes congruent to 1, 3, 5, 7 mod 8 respectively.at n=32A337145