a(n) = (d(n)-r(n))/5, where d = A026054 and r is the periodic sequence with fundamental period (3,3,0,0,4).

A026056

a(n) = (d(n)-r(n))/5, where d = A026054 and r is the periodic sequence with fundamental period (3,3,0,0,4).

Terms

    a(0) =2a(1) =5a(2) =10a(3) =16a(4) =23a(5) =33a(6) =45a(7) =60a(8) =77a(9) =96a(10) =119a(11) =145a(12) =175a(13) =208a(14) =244a(15) =285a(16) =330a(17) =380a(18) =434a(19) =492a(20) =556a(21) =625a(22) =700a(23) =780a(24) =865a(25) =957a(26) =1055a(27) =1160a(28) =1271a(29) =1388

External references