77776

Appears in sequences

• The PDO(n) function (Partitions with Designated summands in which all parts are Odd): the sum of products of multiplicities of parts in all partitions of n into odd parts.at n=47A102186
• A triangular array made from polynomial coefficients of A049614.at n=42A118687
• Numbers k such that binomial(3k, k) + 1 is prime.at n=34A125221
• The list of the A values in the common solutions to the 2 equations 15*k+1=A^2, 19*k+1=B^2.at n=4A161595
• a(n) = n^4 + 3*n^3 - 3*n.at n=15A192398
• Number of unlabeled graphs on n nodes whose components are cycles or complete graphs.at n=33A217067
• Valid groups of final digits a square number made entirely of the digits 6, 7 and 8 can have.at n=13A241072
• Number of n X 4 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.at n=10A281201
• Positive integers m such that m * (m+1) contains at least 8 decimal digits that are in neither m nor m+1.at n=0A381247
• a(n) = least positive integer m such that m*(m+1) has n-2 distinct digits in base n, all distinct from those (base-n digits) of m and m+1.at n=8A381248