Triangle of numbers relating two sequences A073155 and A073156.

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =5a(5) =9a(6) =14a(7) =18a(8) =22a(9) =36a(10) =56a(11) =70a(12) =86a(13) =100a(14) =156a(15) =237a(16) =293a(17) =349a(18) =405a(19) =461a(20) =698a(21) =1046a(22) =1283a(23) =1507a(24) =1703a(25) =1927a(26) =2164a(27) =3210a(28) =4762a(29) =5808