67776

Appears in sequences

• a(n) = T(2n,n), T given by A027157.at n=7A027158
• a(n) = T(2n,n-1), T given by A027157.at n=6A027159
• a(n) = T(n,[ n/2 ]), T given by A027157.at n=14A027163
• Largest palindromic substring in n! without an initial zero.at n=48A046276
• Palindromes with exactly 8 prime factors (counted with multiplicity).at n=3A046334
• Palindromes with exactly 8 prime factors (counted with multiplicity) each of which is a palindrome.at n=2A046382
• Expansion of 1/(1 - 2*x^3 - x^4).at n=37A052922
• a(n) contains n digits (either '6' or '7') and is divisible by 2^n.at n=4A053337
• Third convolution of A002605(n) (generalized (2,2)-Fibonacci), n >= 0, with itself.at n=7A073390
• Number of ways to place n nonattacking composite pieces queen + leaper[1,5] on an n X n chessboard.at n=14A189866
• Triangle of coefficients of polynomials u(n,x) jointly generated with A208760; see the Formula section.at n=62A208759
• Valid groups of final digits a square number made entirely of the digits 6, 7 and 8 can have.at n=9A241072
• Number of length 3+2 0..n arrays with some pair in every consecutive three terms totalling exactly n.at n=22A245872
• Palindromes p = A002113(n) whose index n is a substring of p.at n=7A248753
• Palindromes p=A002113(n) whose index n is also a palindrome and in addition a substring of p (strings in base 10).at n=7A248754
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 374", based on the 5-celled von Neumann neighborhood.at n=16A281524
• Number of nX2 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.at n=11A298148