Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 5 X 5 X 5 subtriangle summing to 11.
A154084
Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 5 X 5 X 5 subtriangle summing to 11.
Terms
- a(0) =4356a(1) =22042a(2) =45272a(3) =88706a(4) =98900a(5) =136385a(6) =149064a(7) =106717a(8) =64675a(9) =36589a(10) =21463a(11) =11783a(12) =8185a(13) =7433a(14) =7667a(15) =7302a(16) =7821a(17) =7260a(18) =6960a(19) =7260a(20) =7620a(21) =7892a(22) =6960a(23) =7260a(24) =6960a(25) =7260a(26) =8148a(27) =7260a(28) =6960a(29) =7260
External references
- oeis: A154084