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%I #5 Mar 30 2012 18:39:15
%S 17,86,157,260,401,586,821,1112,1465,1886,2381,2956,3617,4370,5221,
%T 6176,7241,8422,9725,11156,12721,14426,16277,18280,20441,22766,25261,
%U 27932,30785,33826,37061,40496,44137,47990,52061,56356,60881,65642,70645
%N a(n)=[e*(n+3)! ]-(n+3)(n+2)(n+1)(n)*[e*(n-1)! ].
%F a(1)=17 n>1 a(n)=n^3+7*n^2+17*n+16
%Y Cf. A000522.
%K nonn
%O 1,1
%A _Benoit Cloitre_, Mar 10 2003
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