120891

Appears in sequences

• Numbers n such that there is no other number k for which A155043(k) = A155043(n).at n=18A262509
• Parent nodes of nonzero terms of A262509: a(n) = A049820(A262509(n)).at n=18A262510
• E.g.f. A(x) satisfies A(x) = 1/( 1 - sinh(x * A(x)^2) / A(x)^2 ).at n=7A381382