327645

Appears in sequences

• Triangular numbers whose digits can be rearranged to form a substring of 123456789012345678901234....at n=24A068804
• Number of compositions of the integer n with strictly smallest part in the first position.at n=29A079501
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, -1), (0, 0, 1), (1, 0, -1)}.at n=15A148000
• a(n) is the smallest triangular number T(k) such that both it and its successor T(k+1) have exactly 2n divisors, or 0 if no such pair of consecutive triangular numbers exists.at n=9A319036
• Table read by rows: T(n,k) is the smallest triangular number that begins a run of exactly k consecutive triangular numbers with n divisors, or 0 if no such run exists.at n=27A319038