Antidiagonal sums of symmetric square array A101515 and also equals the binomial transform of a sequence formed from terms of A101514 repeated twice.
A101516
Antidiagonal sums of symmetric square array A101515 and also equals the binomial transform of a sequence formed from terms of A101514 repeated twice.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =8a(4) =17a(5) =38a(6) =91a(7) =232a(8) =632a(9) =1824a(10) =5571a(11) =17892a(12) =60355a(13) =212898a(14) =784416a(15) =3008480a(16) =11997341a(17) =49612426a(18) =212536067a(19) =941213428a(20) =4305049140a(21) =20302469824a(22) =98641434683a(23) =493038167880
External references
- oeis: A101516