Partial sums of number of n-step closed paths on hexagonal lattice A002898.
A180016
Partial sums of number of n-step closed paths on hexagonal lattice A002898.
Terms
- a(0) =1a(1) =1a(2) =7a(3) =19a(4) =109a(5) =469a(6) =2509a(7) =12589a(8) =67399a(9) =358039a(10) =1946395a(11) =10622755a(12) =58600531a(13) =324978643a(14) =1813780243a(15) =10169519635a(16) =57273912685a(17) =323755931917
External references
- oeis: A180016