38804

Appears in sequences

• Numbers k such that phi(k) = phi(k+1).at n=24A001274
• a(n) = Sum_{k=0..n} 4^k*F(k) where F(k) is the k-th Fibonacci number.at n=6A082988
• a(0) = 0, a(1) = 4; for n > 1, a(n) = 10*a(n-1) - a(n-2).at n=5A122652
• Denominators of continued fraction convergents to sqrt(3/2).at n=9A142239
• Square root of floor(A055851(n)/6).at n=17A204519
• a(n) is the first occurrence of a composite number whose factorization without exponents contains exactly n circular loops (i.e., loops in digits 0, 6, 8, 9) on each side of the equals sign.at n=4A329542
• Square array, read by descending antidiagonals, where each row n comprises the integers w >= 1 such that A000037(n)*w^2+4 is a square.at n=31A378908