Number of 11X11X11 triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= n.
A166219
Number of 11X11X11 triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= n.
Terms
- a(0) =1a(1) =146a(2) =10515a(3) =444424a(4) =10091912a(5) =153952919a(6) =1770255356a(7) =15702838676a(8) =113781268522a(9) =703336933599
External references
- oeis: A166219