Transform of central binomial coefficients A000984 whose Hankel transform obeys a Somos-4 recurrence.

A157004

Transform of central binomial coefficients A000984 whose Hankel transform obeys a Somos-4 recurrence.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =18a(4) =58a(5) =192a(6) =650a(7) =2232a(8) =7746a(9) =27096a(10) =95376a(11) =337404a(12) =1198546a(13) =4272308a(14) =15273888a(15) =54744268a(16) =196646922a(17) =707747988a(18) =2551624304a(19) =9213416524a(20) =33313656888a(21) =120604436624a(22) =437112790668

External references