Numbers k that divide the k-th term of Narayana's cows sequence.

Terms

a(0) =1a(1) =6a(2) =12a(3) =52a(4) =390a(5) =650a(6) =663a(7) =2077a(8) =11479a(9) =31671a(10) =41158a(11) =43508a(12) =104894a(13) =123682a(14) =127370a(15) =170819a(16) =175075a(17) =191516a(18) =266247a(19) =274378a(20) =327159a(21) =341638a(22) =366903a(23) =383847a(24) =733985a(25) =1236087a(26) =1755063a(27) =1763775a(28) =2277964a(29) =2364654