77251

Appears in sequences

• Odd composite numbers k all of whose divisors larger than 1 are not binary palindromes (A006995) such that the divisors of the binary reversal of k (A030101) are the binary reversals of the divisors of k.at n=14A331664
• Expansion of Product_{k>=1} 1 / (1 - x^k)^(9^(k-1)).at n=6A343354
• Expansion of g.f. A(x) satisfying 0 = Sum_{n=-oo..+oo} x^n * A(x)^n * (1 + (-x)^(n-1))^(n+1).at n=9A366735