A369137 Inverse permutation to A369136.

1, 2, 3, 4, 6, 5, 11, 7, 8, 9, 51, 10, 28, 14, 12, 15, 1602, 13, 194, 16, 18, 60, 307, 17, 23, 35, 20, 21, 681, 19

Offset: 1

Author

Pontus von Brömssen, Jan 14 2024

Keywords

• nonn
• more

Comments

A284456(a(n)) is the smallest number whose prime tower factorization tree has Matula-Göbel number n.

After a(31), the sequence continues 25, 71, 1726, 31, 22, 1304, 221, 44, 24, ?, 26, ?, 79, 27, 343, ?, 29, 47, 33, 1867, 50, ?, 32, 98, 34, 250, 739, ?, 30, ?, ?, 37, 42, 66, 91, ?, 1935, 381, 41, ... .

Links

• Index entries for sequences related to Matula-Göbel numbers.

Crossrefs

Cf. A007097, A014221, A025488, A098719, A284456, A369015, A369099, A369136, A369138.

Formula

A369015(A284456(a(n))) = A369136(a(n)) = n.

A369099(n) = A284456(a(n)).

A369138(a(A007097(n))) = A025488(A014221(n-1)).

A369138(a(2^n)) = A098719(n+1).