Number of ways to write n as an ordered sum of 9 nonzero decimal palindromes.

Terms

a(0) =1a(1) =9a(2) =45a(3) =165a(4) =495a(5) =1287a(6) =3003a(7) =6435a(8) =12870a(9) =24301a(10) =43686a(11) =75249a(12) =124809a(13) =200115a(14) =311157a(15) =470415a(16) =693000a(17) =996633a(18) =1401436a(19) =1929465a(20) =2603979a(21) =3448440a(22) =4485267a(23) =5734395a(24) =7211718a(25) =8927523a(26) =10885050a(27) =13079257a(28) =15496065a(29) =18112050