Partitions of n with parts having at most 3 distinct magnitudes.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =7a(6) =11a(7) =15a(8) =22a(9) =30a(10) =41a(11) =54a(12) =72a(13) =91a(14) =115a(15) =145a(16) =177a(17) =215a(18) =258a(19) =308a(20) =364a(21) =424a(22) =491a(23) =568a(24) =651a(25) =742a(26) =838a(27) =940a(28) =1065a(29) =1181