Search: id:A131381 Results 1-1 of 1 results found. %I A131381 %S A131381 2,2,0,4,0,4,3,0,0,4,0,0,5,8,0,0,0,0,0,0,0,0,0,0,9,0,0,10,0,16,11,0,0, %T A131381 24,0,0,26,0,0,28,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,0,0,0,0, %U A131381 0,0,0,0,0,0,0,0,0,0,0,0,27,0,0,28,0,0,29,0,0,60,0,0,62,0,0,64,0,0,0,0 %N A131381 a(n)=binomial(2*n,n) mod (n+2)), with n>=1. %C A131381 Contains large zones of zeros %e A131381 n=6 -> binomial(12,6) mod 8 -> 12!/(6!*6!) mod 8 -> 924 mod 8 -> 4 %p A131381 P:=proc(n) local i,j; for i from 1 by 1 to n do j:=(binomial(2*i,i) mod (i+2)); print(j); od; end: P(200); %Y A131381 Cf. A118114, A131382. %Y A131381 Sequence in context: A090657 A108563 A138476 this_sequence A112080 A052176 A138092 %Y A131381 Adjacent sequences: A131378 A131379 A131380 this_sequence A131382 A131383 A131384 %K A131381 easy,nonn %O A131381 0,1 %A A131381 Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), Jul 05 2007 Search completed in 0.001 seconds