Triangle, read by rows, equal to the matrix square of A113983.

Terms

a(0) =1a(1) =2a(2) =1a(3) =4a(4) =4a(5) =1a(6) =8a(7) =12a(8) =6a(9) =1a(10) =18a(11) =36a(12) =26a(13) =8a(14) =1a(15) =46a(16) =116a(17) =108a(18) =46a(19) =10a(20) =1a(21) =136a(22) =416a(23) =468a(24) =248a(25) =72a(26) =12a(27) =1a(28) =464a(29) =1680