Rank of (1,1,...,1) (n 1's) when {0,1,2,...}^n is lexicographically ordered.
A057553
Rank of (1,1,...,1) (n 1's) when {0,1,2,...}^n is lexicographically ordered.
Terms
- a(0) =1a(1) =5a(2) =16a(3) =56a(4) =203a(5) =749a(6) =2795a(7) =10517a(8) =39832a(9) =151658a(10) =579956a(11) =2225964a(12) =8570330a(13) =33086030a(14) =128028650a(15) =496432760a(16) =1928418395a(17) =7503144365a(18) =29235705215a(19) =114064338335a(20) =445552419545
External references
- oeis: A057553