70298domain: NAppears in sequencesa(n) = number of ways to write n as a sum of distinct numbers <= n, where the addition is carryless mod 10.at n=23A169973Number of permutations p of [n] such that |p(i) - p(i-1)| <= 3 and |p(i) - p(i-2)| <= 4.at n=16A338614