30410

Appears in sequences

• Number of partitions of 1 into n powers of 1/2; or (according to one definition of "binary") the number of binary rooted trees.at n=20A002572
• a(n) = n^2 + (n + 1)^3 + (n + 2)^4.at n=11A061222
• 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), (1, -1, 0), (1, 0, 0), (1, 0, 1)}.at n=9A149900
• a(n) = 169*n^2 + 140*n + 29.at n=13A156640
• Sum of all parts minus the total number of parts of the last section of the set of partitions of n.at n=30A207035
• Beach-Williams Pell numbers of type 2pq (p,q primes).at n=6A212075
• T(n,k) = Number of idempotent n X n 0..k matrices of rank 2.at n=19A224114
• Number of idempotent 5X5 0..n matrices of rank 2.at n=1A224116
• The smallest k >= 0 that can be represented as a linear combination of 1^3, 2^3, ..., n^3 with coefficients +-1 and that cannot be represented using 1^3, 2^3, ..., m^3 with 1<=m<n.at n=22A392126