Floor-Sqrt transform of large central Delannoy numbers (A001850).

Terms

a(0) =1a(1) =1a(2) =3a(3) =7a(4) =17a(5) =41a(6) =94a(7) =220a(8) =515a(9) =1209a(10) =2845a(11) =6711a(12) =15861a(13) =37549a(14) =89015a(15) =211287a(16) =502051a(17) =1194083a(18) =2842413a(19) =6771220a(20) =16141369a(21) =38501639a(22) =91888052a(23) =219411132a(24) =524154756a(25) =1252695124a(26) =2995034616a(27) =7163349548a(28) =17138661276a(29) =41017945745