Odd terms in A015782.

Terms

a(0) =7a(1) =21a(2) =93a(3) =357a(4) =381a(5) =681a(6) =1541a(7) =7181a(8) =24573a(9) =36893a(10) =192061a(11) =388669a(12) =393213a(13) =1505533a(14) =1572861a(15) =10678781a(16) =24736253