26412
domain: N
Appears in sequences
- Open 3-dimensional ball numbers (version 3): a(n) is the number of integer points (i,j,k) contained in an open ball of diameter n, centered at (1/2,1/2,0).at n=37A053595
- a(n) = Sum_{k + l*m <= n} (k + l*m), with 0 <= k,l,m <= n.at n=23A106846
- a(n) = 11*7^n + 1.at n=4A199492
- Table read by antidiagonals: number of toroidal m X n binary arrays, allowing rotation and/or reflection of the rows and/or the columns.at n=38A222188
- Table read by antidiagonals: number of toroidal m X n binary arrays, allowing rotation and/or reflection of the rows and/or the columns.at n=42A222188
- Number of toroidal n X 3 binary arrays, allowing rotation and/or reflection of the rows and/or the columns.at n=6A222189
- Begin with a(0) = 3. Let a(n) for n > 0 be the smallest positive integer not yet in the sequence which forms part of a Primitive Pythagorean Triple (PPT) when paired with a(n-1).at n=42A239356
- a(n) = prime(n+1)^2 - prime(n).at n=36A261465
- Number of distinct resistances that can be produced using at most n unit resistors in series, parallel, bridge or fork configurations.at n=12A341536