34531
domain: N
Appears in sequences
- Least k such that A052343(k)=n.at n=10A052345
- Smallest number which is the sum of two positive triangular numbers in exactly n different ways.at n=10A052346
- Indices of A052343 (ways to write n as sum of two triangular numbers) where record values are reached.at n=8A052348
- Indices of A052344 (ways to write n as sum of two nonzero triangular numbers) where record values are reached.at n=8A053587
- Expansion of exp(x/(1-x-2x^2)).at n=6A112240
- 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, -1), (-1, 0, 1), (0, -1, 1), (1, 1, -1), (1, 1, 0)}.at n=9A148998
- Smallest number which is the sum of two positive triangular numbers (A000217) in at least n ways.at n=9A234004
- Zeroless numbers k such that k - (sum of digits of k) and k - (product of digits of k) contain the same distinct digits as k.at n=13A248717
- Number of nX3 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.at n=5A283381
- Number of nX6 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.at n=2A283384
- T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.at n=30A283386
- T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements.at n=33A283386
- a(n) is the smallest nonnegative integer that can be written as a sum of two distinct nonzero triangular numbers in exactly n ways or -1 if no such integer exists.at n=10A342326