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A297629 a(n) = A297628(n,1). 2
0, 1, 2, 5, 20, 137, 1478, 22925, 481448, 13138193, 451749962, 19104365333, 974417603132, 58981977530777, 4179837144348686, 342799255549127837, 32212592211380729168, 3438255899105307857441, 413670348773363088131474, 55722273751954119897519653, 8352810415786907670280952420 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..20.

PROG

(Julia)

function A297629List(len::Int)

    R = Array{BigInt}(len)

    A = fill(BigInt(0), len+1); A[1] = 1

    for n in 1:len

        for k in n:-1:2 A[k] += A[k+1] end

        for k in 2: 1:n A[k] += A[k-1] end

        R[n] = A[2]

    end

    return R

end

println(A297629List(20))

CROSSREFS

Cf. A297628.

Sequence in context: A006366 A012317 A297630 * A118181 A140988 A136650

Adjacent sequences:  A297626 A297627 A297628 * A297630 A297631 A297632

KEYWORD

nonn

AUTHOR

Peter Luschny, Jan 02 2018

STATUS

approved

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Last modified April 19 10:37 EDT 2019. Contains 322252 sequences. (Running on oeis4.)