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A227605 Number of lattice paths from {8}^n to {0}^n using steps that decrement one component such that for each point (p_1,p_2,...,p_n) we have p_1<=p_2<=...<=p_n. 2
1, 128, 491825, 12509563082, 1026843977181745, 187978502469162658572, 61845760669881132413037769, 31862864761563509123808857974124, 23408169635197679203800470649923362577, 22939433009552344381207995985855864376139032 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vaclav Kotesovec, Table of n, a(n) for n = 0..30

MAPLE

b:= proc(l) option remember; `if`(l[-1]=0, 1, add(add(b(subsop(

      i=j, l)), j=`if`(i=1, 0, l[i-1])..l[i]-1), i=1..nops(l)))

    end:

a:= n-> `if`(n=0, 1, b([8$n])):

seq(a(n), n=0..10);

CROSSREFS

Row n=8 of A227578.

Sequence in context: A016831 A103348 A069446 * A016879 A227661 A016939

Adjacent sequences:  A227602 A227603 A227604 * A227606 A227607 A227608

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Jul 17 2013

STATUS

approved

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Last modified October 16 21:10 EDT 2019. Contains 328103 sequences. (Running on oeis4.)