Euler transform of odd primes.

Terms

a(0) =1a(1) =3a(2) =11a(3) =32a(4) =92a(5) =239a(6) =608a(7) =1465a(8) =3450a(9) =7858a(10) =17525a(11) =38165a(12) =81653a(13) =171497a(14) =354785a(15) =723084a(16) =1454642a(17) =2889854a(18) =5676607a(19) =11031046a(20) =21224439a(21) =40453596a(22) =76428636a(23) =143192339a(24) =266172016a(25) =491072611a(26) =899583306a(27) =1636775949a(28) =2958900040a(29) =5316004485