a(n) = number of ways to write n as a sum of distinct numbers <= n, where the addition is carryless mod 10.

A169973

a(n) = number of ways to write n as a sum of distinct numbers <= n, where the addition is carryless mod 10.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =4a(6) =7a(7) =13a(8) =26a(9) =51a(10) =52a(11) =103a(12) =154a(13) =205a(14) =256a(15) =308a(16) =359a(17) =410a(18) =461a(19) =512a(20) =2408a(21) =4814a(22) =20276a(23) =70298a(24) =189440a(25) =427728a(26) =855452a(27) =1583464a(28) =2833460a(29) =5127424

External references