55449

Appears in sequences

• Expansion of 1/((1-2x)(1-4x)(1-6x)(1-11x)).at n=4A025969
• Numbers k such that k^2 is palindromic in base 13.at n=38A029998
• Numbers k such that phi(k) is equal to A008473(k-1).at n=12A039780
• Numerators of continued fraction convergents to sqrt(77).at n=9A041136
• a(n) = 9*a(n-1)-a(n-2); a(0)=2, a(1)=9.at n=5A056918
• Least of four consecutive numbers which are cubefree and not squarefree, i.e., numbers k such that {k, k+1, k+2, k+3} are in A067259.at n=27A071320
• Central element of a series of 5 successive nonsquarefree numbers.at n=36A188296
• a(n) = n^5 - 5*n^3 + 5*n.at n=8A230586
• a(n) = a(n-1) + a(n-3) + a(n-4) with initial values a(0) = 8, a(1)=5, a(2) = 13, a(3) = 30.at n=19A347902
• Digitally balanced numbers (A031443) whose squares and cubes are also digitally balanced.at n=22A353140