Representation of n = sum_k b_k*(k!!) in the double-factorial base by some b_k-fold concatenation of the indices k.

A181521

Representation of n = sum_k b_k*(k!!) in the double-factorial base by some b_k-fold concatenation of the indices k.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =13a(4) =23a(5) =33a(6) =133a(7) =4a(8) =14a(9) =24a(10) =34a(11) =134a(12) =234a(13) =334a(14) =5a(15) =15a(16) =25a(17) =35a(18) =135a(19) =235a(20) =335a(21) =1335a(22) =45a(23) =145a(24) =245a(25) =345a(26) =1345a(27) =2345a(28) =3345a(29) =55

External references