a(n) = 7*a(n-1) - 7*a(n-2) + a(n-3) for n > 2; a(0) = 28, a(1) = 207, a(2) = 1248.
A155466
a(n) = 7*a(n-1) - 7*a(n-2) + a(n-3) for n > 2; a(0) = 28, a(1) = 207, a(2) = 1248.
Terms
- a(0) =28a(1) =207a(2) =1248a(3) =7315a(4) =42676a(5) =248775a(6) =1450008a(7) =8451307a(8) =49257868a(9) =287095935a(10) =1673317776a(11) =9752810755a(12) =56843546788a(13) =331308470007
External references
- oeis: A155466