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%I A069340 #10 Apr 28 2024 23:48:30
%S A069340 1,4684659,4309313949364,2192685751594010696,842135117177233838318221,
%T A069340 276779468917310425392340761357,82650556110091137942716277468309260,
%U A069340 23148397411303556672474237800571851799252,6193097960464507527053208548973296715713058621
%N A069340 Number of 18 X n binary arrays with path of adjacent 1's from upper right corner to lower left corner.
%Y A069340 Cf. 2 X n A048739, 3 X n A069325, 4 X n A069326, 5 X n A069327, 6 X n A069328, 7 X n A069329, 8 X n A069330, 9 X n A069331, 10 X n A069332, 11 X n A069333, 12 X n A069334, 13 X n A069335, 14 X n A069336, 15 X n A069337, 16 X n A069338, 17 X n A069339, 19 X n A069341, 20 X n A069342, n X n A069343, n X n symmetric A069344.
%K A069340 nonn
%O A069340 1,2
%A A069340 _R. H. Hardin_, Mar 16 2002
%E A069340 a(6)-a(10) from _Sean A. Irvine_, Apr 28 2024

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