19299

Appears in sequences

• Numbers whose base-5 representation contains exactly three 1's and three 4's.at n=31A045262
• Take pairs (a, b), sorted on a, such that T(a)+T(b)=concatenation of a and b, where T(k) is the k-th triangular number A000217(k). Sequence gives values of a.at n=31A096031
• Limit of columns of triangle A112682.at n=13A117161
• a(n) = 3^n - 3*2^(n-2).at n=7A169687
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 219", based on the 5-celled von Neumann neighborhood.at n=30A270932
• Sum over all partitions of n of the number of distinct parts i of multiplicity i - 1.at n=41A277101
• Number of subsets of {2..n} such that the product of the elements is a decimal palindrome.at n=47A339508
• Irregular table read by rows, T(n, k) is the rank of the k-th Seidel permutation of {1,...,n}, permutations sorted in lexicographical order.at n=37A347600