LINKS
Paolo Xausa, <a href="/A356807/b356807_1.txt">Table of n, a(n) for n = 1..1000</a>
Paolo Xausa, <a href="/A356807/b356807_1.txt">Table of n, a(n) for n = 1..1000</a>
proposed
approved
editing
proposed
a(n) = 5*b(n+2) + 2*b(n+1) - 2*b(n-2) for b(n) = A000078(n) the Tetranacci tetranacci numbers.
reviewed
editing
proposed
reviewed
editing
proposed
3, 7, 12, 24, 46, 89, 171, 330, 636, 1226, 2363, 4555, 8780, 16924, 32622, 62881, 121207, 233634, 450344, 868066, 1673251, 3225295, 6216956, 11983568, 23099070, 44524889, 85824483, 165432010, 318880452, 614661834, 1184798779, 2283773075, 4402114140, 8485347828
Paolo Xausa, <a href="/A356807/b356807_1.txt">Table of n, a(n) for n = 1..1000</a>
LinearRecurrence[{1, 1, 1, 1}, {3, 7, 12, 24}, 50] (* Paolo Xausa, Aug 30 2024 *)
approved
editing
reviewed
approved
proposed
reviewed
editing
proposed