39351

Appears in sequences

• a(n) is the concatenation of n and 9n.at n=38A009474
• 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, 0, 0), (-1, 0, 1), (0, -1, 0), (1, 1, -1), (1, 1, 0)}.at n=9A149340
• Number of partitions of n having depth 2; see Comments.at n=46A237750
• Expansion of Product_{k>=1} 1/(1-x^k)^(k+(-1)^k).at n=20A258386