Search: id:A086023
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%I A086023
%S A086023 1,26,251,1476,6376,22252,66352,175252,420277,931502,1933503,3796728,
%T A086023 7109128,12773528,22137128
%N A086023 a(n) = Sum_(i=1..n) C(i+3,4)^2.
%H A086023 A. F. Labossiere, <a href="http://membres.lycos.fr/labos2/">New Artefact 
               From Pascal's Triangle</a>.
%H A086023 A. F. Labossiere, <a href="http://members.lycos.co.uk/stereotomography/
               ">Miscellaneous</a>.
%F A086023 Sum_(i=1..n) C(i+3, 4)^2 = [ C(n+4, 5)/126 ]*[ 126 +420*C(n-1, 1) +540*C(n-1, 
               2) +315*C(n-1, 3) +70*C(n-1, 4) ]
%Y A086023 Cf. A087127, A024166, A085438, A085439, A085440, A085441, A085442, A086020, 
               A086021, A086022, A086024, A086025, A086026, A086027, A086028, A086029, 
               A086030.
%Y A086023 Sequence in context: A088889 A060105 A108645 this_sequence A125389 A109467 
               A126547
%Y A086023 Adjacent sequences: A086020 A086021 A086022 this_sequence A086024 A086025 
               A086026
%K A086023 easy,nonn
%O A086023 1,2
%A A086023 Andre F. Labossiere (boronali(AT)laposte.net), Jul 11 2003

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